KR20180031723A - Physical downlink control channel transmission method and apparatus - Google Patents

Abstract

Embodiments of the present invention provide a method and apparatus for transmitting physical downlink control channels, and in the field of communications, to enhance signal strength for receiving physical downlink control channels by a UE and to improve communication quality between a UE and a base station . This transmission method comprises the steps of acquiring, by the UE, a set of parameters for transmitting a first physical downlink control channel, the first physical downlink control channel having the same downlink control information (DCI) in at least R subframes, - used to transmit; Determining, by a UE, N candidate positions for transmitting a first physical downlink control channel by a base station, the candidate positions including R subframes; Monitoring by the UE at N candidate locations whether the base station transmits a first physical downlink control channel; And receiving, by the UE at a first candidate location, a first physical downlink control channel transmitted by the base station, wherein the N candidate locations comprise a first candidate location.

Description

Physical downlink control channel transmission method and apparatus

Field of the Invention The present invention relates to the field of communications, and more particularly, to a physical downlink control channel transmission method and apparatus.

In a Long Term Evolution (LTE) system, before transmitting an Enhanced Physical Downlink Control Channel (EPDCCH) to a UE (User Equipment), a base station typically has one Or two EPDCCH configuration sets to the UE. The EPDCCH configuration set includes configuration information such as the transmission type of the EPDCCH and the number of PRBs (physical resource blocks) occupied by the EPDCCH. In particular, the configuration information in the EPDCCH configuration set may be used to indicate a number of candidate EPDCCHs, i.e., a candidate EPDCCH set. According to the definition in the 3GPP TS 36.213 protocol, in one subframe (1 ms), each UE needs to monitor a number of candidate EPDCCHs and transmits the EPDCCH transmitted by the base station in the subframe on the candidate EPDCCH , It is necessary to attempt to decode each candidate EPDCCH in the candidate EPDCCH set until the UE correctly receives it. EPDCCH is any candidate EPDCCH in the candidate EPDCCH set.

However, a UE with a relatively poor communication capability, such as a UE located in a cellar, may fail to correctly decode and receive the EPDCCH transmitted by the base station in one subframe. As a result, the UE may not be able to perform a normal interaction with the base station for a relatively long time, and communication quality between the UE and the base station is reduced.

Embodiments of the present invention provide a physical downlink control channel transmission method and apparatus to enhance signal strength for receiving a physical downlink control channel by a UE and improve communication quality between a UE and a base station.

In order to achieve the above-mentioned objects, the following technical solutions are used in the embodiments of the present invention:

According to a first aspect, an embodiment of the present invention provides a physical downlink control channel transmission method,

Obtaining, by the UE, a set of parameters for transmitting a first physical downlink control channel, wherein a first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes, R is an integer of 1 or more;

Determining, by the UE, N candidate positions for transmitting a first physical downlink control channel by a base station, the candidate position comprising R subframes, where N is an integer greater than or equal to one;

Monitoring by the UE at N candidate locations whether the base station transmits a first physical downlink control channel; And

Receiving a first physical downlink control channel transmitted by a base station by a UE at a first candidate location, wherein the N candidate locations comprise a first candidate location.

Referring to the first aspect, in a first possible implementation of the first aspect, the parameter set comprises information indicating R subframes occupied for transmitting a first physical downlink control channel, : The number of ECCEs (enhanced control channel elements) constituting the first physical downlink control channel, the indices of the ECCEs, the number of ECCEs for scrambling blocks of bits transmitted on the first physical downlink control channel A first parameter used to determine a scrambling code sequence, a second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel, an antenna port number associated with a first physical downlink control channel, And a transmission type of the downlink control channel.

With reference to a first possible implementation of the first aspect, in a second possible implementation of the first aspect, the information on the R subframes includes position information of R subframes or position information of the starting subframe of R subframes to be.

Referring to a second possible implementation of the first aspect, in a third possible implementation of the first aspect, a plurality of candidate positions are set for R subframes on the same frequency domain resource;

The step of acquiring, by the UE, information about the R subframes occupied to transmit the first physical downlink control channel,

Obtaining position information of R subframes or position information of a starting subframe of R subframes, at each candidate position, by the UE,

There is a first offset between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one.

Referring to a second possible implementation of the first aspect, in a fourth possible implementation of the first aspect, information about the R subframes occupied to transmit the first physical downlink control channel is obtained Lt; / RTI >

Determining, by the UE, the format of the DCI carried on the first physical downlink control channel; And

Obtaining position information of R subframes or position information of a starting subframe of R subframes by the UE according to the format of the DCI.

Referring to any one of the first through fourth possible implementations of the first aspect, in a fifth possible implementation of the first aspect, the parameter set comprises P subframes occupied to transmit the first physical downlink control channel Wherein the position of the starting subframe of the P subframes is the same as the position of the starting subframe of the R subframes and is transmitted on the first physical downlink control channel in the P subframes DCI is equal to DCI transmitted in R subframes, P is an integer equal to or greater than 1, and P is not equal to R.

Referring to any one of the first through fifth possible implementations of the first aspect, in a sixth possible implementation of the first aspect, the number of ECCEs constituting the first physical downlink control channel in each of the R subframes , The step of acquiring, by the UE,

Obtaining, by the UE, a transmission set for transmitting a first physical downlink control channel, the transmission set including a quantity of PRBs occupied for transmitting a first physical downlink control channel, a format of a DCI, prefix, or a frame structure type, the frame structure type including a first frame structure type or a second frame structure type; And

Determining, by the UE according to the set of transmissions, the quantity of ECCEs constituting the first physical downlink control channel.

Referring to a sixth possible implementation of the first aspect, in the seventh possible implementation of the first aspect, the step of determining, by the UE according to the transmission set, the quantity of ECCEs constituting the first physical downlink control channel,

Determining a quantity of ECCEs constituting a first physical downlink control channel in a first one of R subframes by a UE according to a transmission set, One; And

The number of ECCEs constituting the first physical downlink control channel in each of the R-1 other subframes other than the first subframe among the R subframes is determined as a first physical downlink control channel in the first subframe By the UE according to the number of constituent ECCEs and a first predetermined rule.

Referring to any one of the first through fifth possible implementations of the first aspect, in an eighth possible implementation of the first aspect, the number of ECCEs constituting the first physical downlink control channel in each of the R sub- , The step of acquiring, by the UE,

Receiving, by a UE, a quantity of ECCEs constituting a first physical downlink control channel in a first subframe among R subframes and transmitted by a base station, the first subframe includes R subframes -; And

The number of ECCEs constituting the first physical downlink control channel in each of the R-1 other subframes other than the first subframe among the R subframes is determined as a first physical downlink control channel in the first subframe By the UE according to the number of constituent ECCEs and a first predetermined rule.

Referring to a seventh or eighth possible implementation of the first aspect, in a ninth possible implementation of the first aspect,

If the number of ECCEs constituting the first physical downlink control channel in the first subframe is 16 or 24 and R-1 other subframes include the first type special subframe, The number of ECCEs constituting one physical downlink control channel is 12 or less than 12; or

If the first subframe is a first type special subframe and the number of ECCEs constituting the first physical downlink control channel in the first subframe is 12 and R-1 other subframes include a normal subframe, The number of ECCEs constituting the first physical downlink control channel in the normal subframe is 12, 24, or 16,

The first type special subframe is a special subframe corresponding to the special subframe in the second frame structure type when the configuration is 1, 2, 6, 7, or 9.

Referring to any one of the sixth through ninth possible implementations of the first aspect, in a tenth possible implementation of the first aspect, indexes of the ECCEs constituting the first physical downlink control channel in each of the R subframes , The step of acquiring, by the UE,

The number of ECCEs constituting the first physical downlink control channel in the first subframe, the number of candidate positions for transmitting the first physical downlink control channel in the first subframe, and the number of ECCEs included in the first subframe Determining, by the UE, indices of ECCEs in a first one of R subframes according to a quantity; And

The indexes of the ECCEs in the first subframe and the indexes of the ECCEs in each of the R-1 other subframes other than the first one of the R subframes according to the second predetermined rule are determined by the UE .

Referring to any one of the sixth through ninth possible implementations of the first aspect, in an eleventh possible implementation of the first aspect, indexes of the ECCEs constituting the first physical downlink control channel in each of the R subframes , The step of acquiring, by the UE,

Receiving, by a UE, indices of ECCEs constituting a first physical downlink control channel in a first one of R subframes and transmitted by a base station; And

The indexes of the ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes are divided into a first physical downlink control channel in the first subframe By the UE according to the indexes of the constituent ECCEs and the second predetermined rule.

Referring to any one of the first through eleventh possible implementations of the first aspect, in a twelfth possible implementation of the first aspect, a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel Wherein the step of obtaining, by the UE,

When a first physical downlink control channel is mapped to PRBs contained in two EPDCCH configuration sets, it is possible to determine a scrambling code sequence based on parameters used to determine the scrambling code sequence in the two EPDCCH configuration sets, And determining, by the UE, a first parameter.

Referring to any one of the first through eleventh possible implementations of the first aspect, in a thirteenth possible implementation of the first aspect, a second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel , The step of acquiring, by the UE,

When a first physical downlink control channel is mapped to physical resource blocks contained in two EPDCCH configuration sets, it is possible to determine, based on the parameters used in determining the demodulation reference signal in the two EPDCCH configuration sets, And determining a second parameter by the UE.

Referring to any one of the first through thirteen possible implementations of the first aspect, in a fourteenth possible implementation of the first aspect, an antenna port number associated with a first physical downlink control channel in each of the R sub- The step of obtaining, by the UE,

When the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and a normal cyclic prefix is configured in the LTE system, the associated antenna port numbers are {107, 108, 109, 110 }, ≪ / RTI > by the UE;

When the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and an extended cyclic prefix is configured in the LTE system, the associated antenna port numbers are numbered at {107, 108} , By the UE;

When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the normal cyclic prefix is configured in the LTE system, the R subframes include the normal subframe and the first type special subframe Determining, by the UE, that the associated antenna port number is a number at {107, 109};

When a DCI carried on a first physical downlink control channel is used to schedule UE specific messages and a normal loop prefix is configured in an LTE system, when R subframes do not include a first type special subframe, Determining by the UE that the antenna port is a number at {107, 108, 109, 110}; or

If the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the extended cyclic prefix is configured in the LTE system, the associated antenna port is the number at {107, 109} .

Referring to a fourteenth possible implementation of the first aspect, in a fifteenth possible implementation of the first aspect,

If the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the R subframes include a normal subframe and a first type special subframe, a normal cyclic prefix is configured in the LTE system Depending on the lowest ECCE index used in the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, and the number of ECCEs carried in the PRB pair in the first type special subframe, Determines the associated antenna port number at {107, 109}; or

When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the R subframes do not include the first type special subframe, when the normal loop type prefix is configured in the LTE system, 1 UE, according to the lowest ECCE index used in the physical downlink control channel, the number of ECCEs occupied by the first physical downlink control channel, and the number of ECCEs carried in the PRB pair in the normal subframe , 109,110}. ≪ / RTI >

Referring to any one of the first through fifteen possible implementations of the first aspect, in a sixteen possible implementation of the first aspect, a set of parameters for transmitting a first physical downlink control channel is obtained In the step,

Comprising: receiving, by a UE, configuration information transmitted by a base station,

The configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or configuration information includes information indicating R subframes occupied to transmit a first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel, a first parameter used to determine a scrambling code sequence associated with a first physical downlink control channel, A second parameter used to determine a demodulation reference signal, an associated antenna port number, or a transmission type of a first physical downlink control channel.

Referring to any one of the first through sixteen possible implementations of the first aspect, in a seventeenth possible implementation of the first aspect, the format of the DCI includes a first DCI format and a second DCI format, Includes scheduling information used for scheduling a physical downlink shared channel (PDSCH), and the second DCI format includes some or all of information on a random access response (RAR);

After receiving the first physical downlink control channel transmitted by the base station by the UE in the first candidate location,

Determining, by the UE, the format of the DCI according to information about the first bit at the DCI carried on the first physical downlink control channel; or

Determining, by the UE, the format of the DCI according to a scrambling code for scrambling the CRC; the CRC is a CRC attached to the DCI carried on the first physical downlink control channel; or

The number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the index of the ECCEs constituting the first physical downlink control channel Further comprising the step of determining, by the UE, the format of the DCI according to one.

According to a second aspect, an embodiment of the present invention provides a physical downlink control channel transmission method,

Acquiring, by a base station, a set of parameters for transmitting a first physical downlink control channel, wherein a first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes, R is an integer of 1 or more;

Determining, by the base station, N candidate positions for transmitting a first physical downlink control channel to the UE, the base station comprising R subframes, where N is an integer greater than or equal to one; And

Determining, by a base station, a first candidate location at N candidate locations, by a base station, as a location for transmitting a first physical downlink control channel to a UE; and determining, at a first candidate location, To the UE.

With reference to the second aspect, in a first possible implementation of the second aspect, the parameter set comprises information indicating R subframes occupied for transmitting a first physical downlink control channel, and information for each of R subframes : The number of ECCEs (enhanced control channel elements) constituting the first physical downlink control channel, the indices of the ECCEs, the number of ECCEs for scrambling blocks of bits transmitted on the first physical downlink control channel A first parameter used to determine a scrambling code sequence, a second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel, an antenna port number associated with a first physical downlink control channel, And a transmission type of the downlink control channel.

Referring to a first possible implementation of the second or second aspect, in a second possible implementation of the second aspect, after obtaining by the base station a set of parameters for transmitting the first physical downlink control channel, In this method,

Further comprising, by the base station, transmitting configuration information to the UE,

The configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or configuration information includes information indicating R subframes occupied to transmit a first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel, a first parameter used to determine a scrambling code sequence associated with a first physical downlink control channel, A second parameter used to determine a demodulation reference signal, an antenna port number associated with a first physical downlink control channel, or a transmission type of a first physical downlink control channel.

According to a third aspect, an embodiment of the present invention provides a physical downlink control channel transmitting apparatus,

A first acquisition unit configured to obtain a set of parameters for transmitting a first physical downlink control channel, wherein a first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes, R is an integer of 1 or more;

A first determination unit configured to determine N candidate positions for transmitting a first physical downlink control channel by a base station, according to a set of parameters; a first decision unit-candidate location comprises R subframes; -;

A monitoring unit configured to monitor at a N candidate locations whether a base station transmits a first physical downlink control channel; And

A receiving unit configured to receive, at a first candidate location, a first physical downlink control channel transmitted by a base station, the N candidate locations including a first candidate location,

The parameter set includes information indicating R subframes occupied to transmit a first physical downlink control channel, and information on the following parameters in each of the R subframes: ECCE A first parameter used to determine the number of enhanced control channel elements, indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

In relation to the third aspect, in the first possible implementation of the third aspect,

The first obtaining unit is specifically configured to obtain the position information of R subframes or the position information of the starting subframe of R subframes at each candidate position,

A plurality of candidate positions are set for R subframes on the same frequency domain resource, a first offset exists between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one.

Referring to the third aspect, in a second possible implementation of the third aspect,

The first determination unit is further configured to determine the format of the DCI carried on the first physical downlink control channel;

The first obtaining unit is specifically configured to obtain position information of R subframes or position information of a starting subframe of R subframes according to the format of the DCI.

Referring to either the third aspect, or the first and second possible implementations of the third aspect, in a third possible implementation of the third aspect,

Wherein the first acquisition unit is specifically configured to obtain a transmission set for transmitting a first physical downlink control channel, the transmission set comprising a quantity of PRBs occupied for transmitting a first physical downlink control channel, A type of a cyclic prefix (CP), or a frame structure type, and the frame structure type includes a first frame structure type or a second frame structure type;

The first determination unit is further configured to determine, according to the transmission set, the quantity of ECCEs constituting the first physical downlink control channel.

With reference to a third possible implementation of the third aspect, in a fourth possible implementation of the third aspect,

The first decision unit specifically determines the quantity of ECCEs constituting the first physical downlink control channel in the first of the R subframes, according to the transmission set - the first subframe comprises R sub- Frames; And the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the number of ECCEs constituting the first set of rules and the first predetermined rule.

Referring to either the third aspect, or any one of the first through fourth possible implementations of the third aspect, in a fifth possible implementation of the third aspect,

The first determination unit determines the number of ECCEs constituting the first physical downlink control channel in the first subframe, the number of candidate positions for transmitting the first physical downlink control channel in the first subframe, To determine the indices of the ECCEs in the first subframe among the R subframes according to the number of ECCEs included in the frame; And to determine indexes of ECCEs in each of the R-1 other subframes that are not the first one of the R subframes according to the indexes of the ECCEs in the first subframe and the second predetermined rule .

Referring to either the third aspect, or any one of the first through fifth possible implementations of the third aspect, in a sixth possible implementation of the third aspect,

The first determining unit determines the scrambling code sequence in the two EPDCCH configuration sets when the first physical downlink control channel is mapped to PRBs included in the two EPDCCH configuration sets, And is further configured to determine the first parameter according to the parameters used.

Referring to either the third aspect, or any one of the first through fifth possible implementations of the third aspect, in a seventh possible implementation of the third aspect,

The first determining unit determines the demodulation reference signal in the two EPDCCH configuration sets when the first physical downlink control channel is mapped to PRBs included in the two EPDCCH configuration sets And is further configured to determine a second parameter according to the parameters used.

Referring to the third aspect, or the first to seventh possible implementations of the third aspect, in an eighth possible implementation of the third aspect,

The first determination unit determines whether the DCI carried on the first physical downlink control channel is used to schedule the cell specific message and if the normal loop prefix is configured in the LTE system the associated antenna port number is {107, 108, 109, 110} < / RTI > If the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and if an extended cyclic prefix is configured in the LTE system, the associated antenna port number is determined to be a number at {107, 108}; When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the normal cyclic prefix is configured in the LTE system, the R subframes include the normal subframe and the first type special subframe , The associated antenna port number is determined to be the number at {107, 109}; When a DCI carried on a first physical downlink control channel is used to schedule UE specific messages and a normal loop prefix is configured in an LTE system, when R subframes do not include a first type special subframe, To determine that the antenna port is a number at {107, 108, 109, 110}; Or the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and if an extended cyclic prefix is configured in the LTE system the associated antenna port is further determined to be a number at {107, 109} .

Referring to either the third aspect, or any one of the first through eighth possible implementations of the third aspect, in a ninth possible implementation of the third aspect,

The receiving unit is further configured to receive configuration information transmitted by the base station,

The configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or configuration information includes information indicating R subframes occupied to transmit a first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel, a first parameter used to determine a scrambling code sequence associated with a first physical downlink control channel, A second parameter used to determine a demodulation reference signal, an associated antenna port number, or a transmission type of a first physical downlink control channel.

Referring to either the third aspect, or any one of the first through ninth possible implementations of the third aspect, in a tenth possible implementation of the third aspect,

The first determining unit determines the format of the DCI according to information about the first bit at the DCI carried on the first physical downlink control channel; Or to determine the format of the DCI according to a scrambling code for scrambling the CRC; the CRC is a CRC attached to the DCI carried on the first physical downlink control channel; Or the number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the index of the ECCEs constituting the first physical downlink control channel And is further configured to determine the format of the DCI according to at least one,

The DCI format includes a first DCI format and a second DCI format, the first DCI format includes scheduling information used for scheduling a physical downlink shared channel (PDSCH), the second DCI format includes a random access response ) Of the present invention.

According to a fourth aspect, an embodiment of the present invention provides a physical downlink control channel transmitting apparatus,

A second acquisition unit configured to obtain a set of parameters for transmitting a first physical downlink control channel, the first physical downlink control channel being used to transmit the same downlink control information (DCI) in at least R subframes, R is an integer of 1 or more;

To determine N candidate positions for transmitting a first physical downlink control channel to the UE, according to a set of parameters, the candidate position comprising R subframes, where N is an integer greater than or equal to one; And a second decision unit configured to determine a first candidate position at N candidate positions as a position for transmitting a first physical downlink control channel to the UE; And

A transmission unit configured to transmit a first physical downlink control channel to a UE at a first candidate location,

The parameter set includes information indicating R subframes occupied to transmit a first physical downlink control channel, and information on the following parameters in each of the R subframes: ECCE A first parameter used to determine the number of enhanced control channel elements, indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

Referring to a fourth aspect, in a first possible implementation of the fourth aspect,

The transmitting unit is further configured to transmit configuration information to the UE,

The configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or configuration information includes information indicating R subframes occupied to transmit a first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel, a first parameter used to determine a scrambling code sequence associated with a first physical downlink control channel, A second parameter used to determine a demodulation reference signal, an antenna port number associated with a first physical downlink control channel, or a transmission type of a first physical downlink control channel.

According to a fifth aspect, an embodiment of the present invention provides a physical downlink control channel transmission apparatus comprising a first processor and a first transceiver connected to a first processor,

The first processor is configured to obtain a set of parameters for transmitting a first physical downlink control channel, wherein a first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes, and R Is an integer of at least 1; To determine N candidate positions for transmitting a first physical downlink control channel by a base station, according to a set of parameters, the candidate position comprising R subframes, where N is an integer greater than or equal to one; And to monitor at the N candidate locations using the first transceiver whether the base station transmits a first physical downlink control channel;

The first transceiver is further configured to receive a first physical downlink control channel transmitted by the base station at a first candidate location, the N candidate locations comprising a first candidate location,

The parameter set includes information indicating R subframes occupied to transmit a first physical downlink control channel, and information on the following parameters in each of the R subframes: ECCE A first parameter used to determine the number of enhanced control channel elements, indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

With reference to the fifth aspect, in a first possible implementation of the fifth aspect, the information about the R subframes obtained by the first processor is specifically the position information of the R subframes or the start of the R subframes Frame position information.

Referring to a first possible implementation of the fifth aspect, in a second possible implementation of the fifth aspect, a plurality of candidate positions are set for R subframes on the same frequency domain resource; In this case, the first processor obtains information about the R subframes occupied to transmit the first physical downlink control channel. Specifically, it is assumed that the first processor receives from the base station, using the first transceiver, R (M-1) -th candidate positions and the first offset is present between the (M-1) -th candidate position and the (M-1) And M is an integer greater than one.

With reference to a first possible implementation of the fifth aspect, in a third possible implementation of the fifth aspect, the first processor obtains information about the R subframes occupied to transmit the first physical downlink control channel Specifically, the first processor determines the format of the DCI carried on the first physical downlink control channel, and the first processor determines the location of the R subframes or the R subframes And acquiring position information of the starting sub-frame.

Referring to any one of the first through third possible implementations of the fifth aspect, in a fourth possible implementation of the fifth aspect, the set of parameters obtained by the first processor is used to transmit a first physical downlink control channel The position of the start subframe of the P subframes may be the same as the position of the start subframe of the R subframes, and the position of the start subframe of the P subframes may be the same as the position of the start subframe of the R subframes. 1 DCI transmitted on the physical downlink control channel is equal to the DCI transmitted in R subframes, P is an integer equal to or greater than 1, and P is not equal to R.

Referring to any one of the first through fourth possible implementations of the fifth aspect, in a fifth possible implementation of the fifth aspect, the first processor configures a first physical downlink control channel in each of the R subframes Obtaining the quantity of ECCEs specifically includes acquiring a transmission set for a first processor to transmit a first physical downlink control channel, the transmission set comprising a set of PRBs occupied for transmitting a first physical downlink control channel A type of DCI, a type of cyclic prefix (CP), or a frame structure type, and the frame structure type includes a first frame structure type or a second frame structure type; And determining, by the first processor, the number of ECCEs constituting the first physical downlink control channel, according to the transmission set.

With reference to a fifth possible implementation of the fifth aspect, in the sixth possible implementation of the fifth aspect, the first processor determines, according to the transmission set, the quantity of ECCEs constituting the first physical downlink control channel, , Wherein the first processor determines a quantity of ECCEs constituting a first physical downlink control channel in a first one of R subframes according to a transmission set, - < / RTI > The first processor calculates the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the number of ECCEs constituting the physical downlink control channel and a first predetermined rule.

Referring to a fifth possible implementation of the fifth aspect, in a seventh possible implementation of the fifth aspect, the first processor is configured to use the first transceiver to generate a first physical downlink in a first sub- The ECCEs constituting the control channel and can additionally receive the quantity transmitted by the base station, the first subframe being one of the R subframes; The first processor calculates the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the number of ECCEs constituting the physical downlink control channel and the first predetermined rule.

Referring to any one of the first through seventh possible implementations of the fifth aspect, in a eighth possible implementation of the fifth aspect, the first processor configures a first physical downlink control channel in each of the R subframes Obtaining the indices of the ECCEs may be performed in such a manner that the first processor is able to determine the number of ECCEs constituting the first physical downlink control channel in the first subframe, Determining the indices of the ECCEs in the first subframe among the R subframes according to the number of positions and the number of ECCEs included in the first subframe; The first processor determines the indices of the ECCEs in the first sub-frame and the indices of the ECCEs in each of the R-1 other sub-frames other than the first one of the R sub-frames according to the second predetermined rule .

Referring to any one of the first through seventh possible implementations of the fifth aspect, in a ninth possible implementation of the fifth aspect, the first processor is configured to perform a first physical downlink control in a first of the R subframes Receive further indexes of the ECCEs constituting the channel and transmitted by the base station, using the first transceiver; The first processor may be configured to index the indices of the ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the indexes of the ECCEs constituting the downlink control channel and the second predetermined rule.

Referring to any one of the first through ninth possible implementations of the fifth aspect, in a tenth possible implementation of the fifth aspect, a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel When a first processor acquires a first parameter used to determine a physical downlink control channel, specifically, a first physical downlink control channel is mapped to physical resource blocks (PRBs) included in two EPDCCH configuration sets, The first processor may determine the first parameter in accordance with parameters used in determining the scrambling code sequence in the EPDCCH configuration sets.

Referring to any one of the first through ninth possible implementations of the fifth aspect, in a twelfth possible implementation of the fifth aspect, a second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel When the first processor acquires, specifically, when a first physical downlink control channel is mapped to physical resource blocks that are contained in two EPDCCH configuration sets, there are two EPDCCH configuration sets and a demodulation reference And determining a second parameter by the first processor according to parameters used to determine the signal, respectively.

Referring to any one of the first through eleven possible implementations of the fifth aspect, in a twelfth possible implementation of the fifth aspect, an antenna port number associated with a first physical downlink control channel in each of the R subframes When one processor acquires, specifically,

When the DCI carried on the first physical downlink control channel is used to schedule the cell specific message and the normal circular prefix is configured in the LTE system, the associated antenna port number is the number at {107, 108, 109, 110} Determining by the first processor;

If the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and an extended cyclic prefix is configured in the LTE system, then the associated antenna port number is the number at {107, 108} Determining;

When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the normal cyclic prefix is configured in the LTE system, the R subframes include the normal subframe and the first type special subframe Determining, by the first processor, that the associated antenna port number is a number at {107, 109};

When a DCI carried on a first physical downlink control channel is used to schedule UE specific messages and a normal loop prefix is configured in an LTE system, when R subframes do not include a first type special subframe, Determining by the first processor that the antenna port is a number at {107, 108, 109, 110}; or

If the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and an extended cyclic prefix is configured in the LTE system, then the associated antenna port is the number at {107, 109} May be included.

Referring to any one of the first through twelfth possible implementations of the fifth aspect, in a thirteenth possible implementation of the fifth aspect, when obtaining a set of parameters for transmitting a first physical downlink control channel, Can receive the configuration information transmitted by the base station, using the first transceiver,

The configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or configuration information includes information indicating R subframes occupied to transmit a first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel, a first parameter used to determine a scrambling code sequence associated with a first physical downlink control channel, A second parameter used to determine a demodulation reference signal, an associated antenna port number, or a transmission type of a first physical downlink control channel.

Referring to any one of the first through thirteen possible implementations of the fifth aspect, in a fourteenth possible implementation of the fifth aspect, the format of the DCI includes a first DCI format and a second DCI format, Includes scheduling information used for scheduling a physical downlink shared channel (PDSCH), and the second DCI format includes some or all of information on a random access response (RAR);

The first transceiver monitors a first physical downlink control channel transmitted by the base station at a first candidate location and then, according to information about the first bit at the DCI carried on the first physical downlink control channel, Determining a format of the DCI by the first processor; Or the first processor determines the format of the DCI according to a scrambling code for scrambling the CRC; the CRC is a CRC attached to the DCI carried on the first physical downlink control channel; Or the number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the index of the ECCEs constituting the first physical downlink control channel The step of determining the format of the DCI according to at least one of the first processor may be further included.

According to a sixth aspect, an embodiment of the present invention provides a physical downlink control channel transmitting apparatus comprising a second transceiver connected to a second processor and a second processor,

The second processor is configured to obtain a set of parameters for transmitting a first physical downlink control channel, wherein a first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes, and R Is an integer of at least 1; To determine N candidate positions for transmitting a first physical downlink control channel to the UE, according to a set of parameters, the candidate position comprising R subframes, where N is an integer greater than or equal to one; And determine a first candidate location at N candidate locations as a location for sending a first physical downlink control channel to the UE;

The second transceiver is configured to transmit a first physical downlink control channel to the UE at a first candidate location,

The parameter set includes information indicating R subframes occupied to transmit a first physical downlink control channel, and information on the following parameters in each of the R subframes: ECCE A first parameter used to determine the number of enhanced control channel elements, indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

According to the downlink control channel transmission method and apparatus provided in the embodiments of the present invention, the UE obtains a set of parameters for transmitting a first physical downlink control channel, and according to this set of parameters, 1 < / RTI > physical downlink control channel. Each candidate position includes R subframes, and the same DCI is included in R subframes. That is, according to the physical downlink control channel transmission method provided in this embodiment of the present invention, a first physical downlink control channel can be transmitted in R subframes. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE.

BRIEF DESCRIPTION OF THE DRAWINGS For a more clear description of the technical solutions in the embodiments of the present invention, or in the prior art, the accompanying drawings, which are required to illustrate embodiments or the prior art, are briefly described below.
1 is a schematic flow diagram 1 of a physical downlink control channel transmission method according to an embodiment of the present invention.
2 is a schematic flow diagram 2 of a physical downlink control channel transmission method according to an embodiment of the present invention.
3 is a schematic flow diagram 3 of a physical downlink control channel transmission method according to an embodiment of the present invention.
4 is a schematic diagram 1 of locations on RB sub-frames for a physical downlink control channel on a time-frequency resource according to an embodiment of the present invention.
5 is a schematic diagram 2 of locations on RB sub-frames for a physical downlink control channel on a time-frequency resource according to an embodiment of the present invention.
6 is a schematic diagram 3 of locations on RB sub-frames for a physical downlink control channel on a time-frequency resource according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of locations on a time-frequency resource according to an embodiment of the present invention that are R subframes for a physical downlink control channel and P subframes.
8 is a schematic structure diagram of a physical downlink control channel transmission apparatus according to an embodiment of the present invention.
9 is a schematic structure diagram of a physical downlink control channel transmission apparatus according to an embodiment of the present invention.
10 is a schematic structural diagram of an entity of a UE according to an embodiment of the present invention.
11 is a schematic structural view of an entity of a base station according to an embodiment of the present invention.

Brief Description of the Drawings The technical solution in embodiments of the present invention will now be described in detail with reference to the accompanying drawings in embodiments of the present invention. Obviously, the embodiments described are only a few of the embodiments of the invention and are not exhaustive.

It should also be understood that the terms "first" and " second "are intended for illustrative purposes only and are not to be construed as an indication of relative importance or an implicit indication of the quantity of technical features do. Thus, a feature that is limited by a " first "or" second "may include one or more features explicitly or implicitly. In the description of the present invention, "multiple" denotes at least two unless otherwise noted.

As used herein, the term " and / or "describes only the relationships for describing the associated objects and indicates that three relationships may exist. For example, A and / or B may represent the following three cases: A exists only, both A and B are present, and only B exists. In addition, the letter "/" in this specification generally denotes the "or" relationship between the associated objects.

In addition, the UE specific message in the embodiments of the present invention is data carried on a PDSCH (Physical Downlink Shared Channel) or a PUSCH (Physical Uplink Shared Channel). This data carries a CRC (Cyclic Redundancy Check) bit scrambled using a UE specific RNTI (RNTI Radio Network Tempory Identity), and a TB (Transport Block) of the UE .

The cell specific message in the embodiments of the present invention is the data carried on the PDSCH. Such data specifically includes a system information block (SIB), a radio access response (RAR), a paging message, and the like.

Example 1

An embodiment of the present invention provides a physical downlink control channel transmission method. As shown in Figure 1, the method includes:

101. The UE acquires a parameter set for transmitting a first physical downlink control channel. The first physical downlink control channel transmits the same Downlink Control Information (DCI) in at least R subframes. And R is an integer of 1 or more.

102. The UE determines, according to a set of parameters, N candidate positions for transmitting a first physical downlink control channel by a base station, the candidate location comprising R subframes, where N is an integer greater than or equal to one.

103. The UE monitors, at N candidate locations, whether the base station transmits a first physical downlink control channel.

104. A UE comprising a first physical downlink control channel transmitted by a base station, the first candidate location including a first candidate location, wherein the UE receives, at a first candidate location, N candidate locations.

In this embodiment of the invention, in order to improve the performance of receiving the first physical downlink control channel transmitted by the base station by the UE, a channel carrying the same DCI (i.e., a first physical downlink control channel May be transmitted using R subframes and then the UE may receive a first physical downlink control channel transmitted by the base station in each of the R subframes. In this way, a UE with a relatively poor communication capability can correctly receive the first physical downlink control channel in R subframes, so that the signal strength of receiving the first physical downlink control channel by the UE is enhanced . That is, the performance of performing channel estimation on the first physical downlink control channel by the UE is improved using the short-term correlation of the communication environment in the time of the R subframes, and the long- A diversity gain is obtained to improve the performance of monitoring the first physical downlink control channel by the UE.

Specifically, in step 101, the UE first acquires a set of parameters for transmitting a first physical downlink control channel before a first physical downlink control channel is transmitted between the UE and the base station. A first physical downlink control channel is used to transmit the same DCI in at least R subframes.

According to the physical downlink control channel transmission method provided in this embodiment of the present invention, a first physical downlink control channel can be transmitted in R subframes have. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE.

Specifically, the parameter set in step 101 specifically includes information indicating R subframes occupied to transmit the first physical downlink control channel, and information on the following parameters in each of the R subframes: A number of ECCEs (Enhanced Control Channel Elements) constituting a physical downlink control channel, indices of ECCEs, a scrambling code for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel, an antenna port number associated with a first physical downlink control channel, and a first physical downlink control channel, And may include the transmission type of the control channel.

The UE may obtain each parameter in the parameter set using the configuration information transmitted by the base station, or may pre-store the parameter set according to the associated communication protocol. Specifically, the method for obtaining each parameter in the parameter set by the UE is described in detail in a subsequent embodiment. Details are not described herein.

In this manner, at step 102, the UE may determine N candidate positions for transmitting a first physical downlink control channel by the base station, according to the set of parameters. Each of the N candidate positions includes R subframes.

In addition, at step 103, the UE monitors at each of the N candidate locations determined at step 102 whether the base station is transmitting the first physical downlink control channel. This monitoring means that the UE attempts to decode the first physical downlink control channel that can be transmitted by the base station, at each of the N candidate positions, according to the format of the received DCI.

Specifically, the parameter set for transmitting the first physical downlink control channel includes a plurality of parameters, and different values may be set for each parameter. Thus, a set of parameters for each group of parameters with different values can indicate one candidate location for transmitting a first physical downlink control channel, i. E., The set of parameters is for a first physical downlink control channel N candidate positions can be displayed (N? 1). However, the UE does not know the specific candidate location from which the base station actually transmits the first physical downlink control channel. Thus, the UE performs blind detection in accordance with one or more formats of the DCI (since the UE does not know the specific format of the DCI carried on the first physical downlink control channel, the UE may use one or more of the DCIs described herein Formats may be displayed to the UE by the base station or may be pre-stored in the UE), at each candidate location it is necessary to monitor the first physical downlink control channel transmitted by the base station, i. E. The DCI To decode the first physical downlink control channel at each candidate location in accordance with one or more of the formats, and the UE determines at step 104, at the first candidate location used by the base station, , The base station transmits a first physical downlink control channel at the candidate location until it correctly receives the first physical downlink control channel transmitted by the base station .

An embodiment of the present invention provides a physical downlink control channel transmission method. As shown in Figure 2, the method includes:

201. A base station acquires a parameter set for transmitting a first physical downlink control channel, wherein a first physical downlink control channel is used to transmit the same DCI in at least R subframes, and R is an integer greater than or equal to one;

202. A Node B determines N candidate positions for transmitting a first physical downlink control channel to a UE according to a set of parameters, the candidate location comprising R subframes, where N is an integer greater than or equal to one.

203. A base station determines a first candidate location at N candidate locations as a location for transmitting a first physical downlink control channel and a first physical downlink control channel to a UE at a first candidate location .

Specifically, in step 201, corresponding to steps 101 and 102, the base station also obtains a set of parameters for transmitting a first physical downlink control channel, and transmits the same downlink control information (DCI) in R subframes The first physical downlink control channel carrying the first physical downlink control channel, thereby improving the probability of correctly receiving the first physical downlink control channel by the UE. A first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes.

Similarly, the parameter set at step 201 specifically includes information indicating R subframes occupied to transmit the first physical downlink control channel, and information indicating the following parameters in each of the R subframes: A first parameter used for determining a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel, a first parameter used for determining a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

In step 202, since the parameter set for transmitting the first physical downlink control channel may indicate a plurality of candidate positions for transmitting the first physical downlink control channel, the base station may set the parameter set Accordingly, it is possible to determine N candidate positions for transmitting the first physical downlink control channel to the UE.

In addition, at step 203, the base station may determine a first candidate location at N candidate locations determined at step 202, according to scheduling requirements, pre-stored transport rules, or related protocol specifications. The first candidate location is a location for transmitting the first physical downlink control channel. Next, the base station transmits the first physical downlink control channel to the UE at the first candidate location.

Correspondingly, since the UE has determined the set of parameters for transmitting the first physical downlink control channel, the UE does not know the specific candidate position at which the base station finally transmits the first physical downlink control channel, To attempt to decode the first physical downlink control channel at each candidate location by performing blind detection in accordance with the first physical downlink control channel And determines whether the base station transmits the first physical downlink control channel until it correctly receives the control channel.

According to the downlink control channel transmission method provided in this embodiment of the present invention, the UE obtains a set of parameters for transmitting a first physical downlink control channel, and in accordance with this set of parameters, And determines N candidate positions for transmitting the downlink control channel. Each candidate position includes R subframes, and the same DCI is included in R subframes. That is, according to the physical downlink control channel transmission method provided in this embodiment of the present invention, a first physical downlink control channel can be transmitted in R subframes. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE.

Example 2

An embodiment of the present invention provides a downlink control channel transmission method. As shown in Figure 3, the method includes:

301. UE acquires information about R subframes occupied to transmit a first physical downlink control channel.

302. The UE obtains the number of ECCEs constituting the first physical downlink control channel in each of the R subframes.

303. The UE acquires indexes of ECCEs constituting a first physical downlink control channel in each of R subframes.

304. A UE obtains a first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel.

305. The UE acquires a second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel.

306. The UE acquires an antenna port number associated with a first physical downlink control channel in each of the R subframes.

307. A method for transmitting N first candidate physical locations for transmission of a first physical downlink control channel by a base station, comprising: determining N candidate locations for transmission of a first physical downlink control channel by a base station, information about R subframes determined in steps 301 to 306, The UE determines according to the parameters, the second parameter, and the antenna port number.

308. Whether the base station transmits a first physical downlink control channel, the UE monitors at N candidate locations.

309. A UE comprising: a first physical downlink control channel transmitted by a base station, the first candidate location being located at a first candidate location;

Before the first physical downlink control channel (the first physical downlink control channel is used to transmit the same DCI in at least R subframes) is transmitted between the UE and the base station, the UE first performs a first physical downlink control Information indicating R subframes to be occupied for transmitting a channel, and information on the number of ECCEs constituting the first physical downlink control channel, indices of ECCEs, A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a physical downlink control channel, a second parameter used to determine a demodulation reference signal associated with a first physical downlink control channel, An antenna port number associated with a first physical downlink control channel, and an antenna port number associated with a first physical downlink control channel It is necessary to obtain a new type.

Specifically, in step 301, the UE acquires information about R subframes occupied to transmit the first physical downlink control channel. The information on the R subframes may be specifically the position information of the R subframes, or the position information of the starting subframe of the R subframes. For example, the information on the R subframes includes the frame number of the radio frame to which the R subframes belong, and the frame number of the starting subframe of the R subframes.

It should be noted that, in this embodiment of the invention, the R subframes occupied to transmit the first physical downlink control channel may be R consecutive subframes or R non-consecutive subframes. For example, in a TDD system, consecutive subframes may include both an uplink subframe and a downlink subframe. In this case, the R subframes occupied to transmit the first physical downlink control channel may be R consecutive downlink subframes. Alternatively, frequency hopping may occur in the R subframes occupied to transmit the first physical downlink control channel. For example, a first one of the R subframes is located on a first frequency domain resource, and a second subframe to an Rth subframe are located on a second frequency domain resource. In this case, since the handover between the different frequency domain resources needs to additionally occupy the handover time (such as the time of one subframe), the R number of occupied to transmit the first physical downlink control channel The subframes are R non-contiguous subframes that do not include handover time.

For example, the following embodiments are described using R consecutive subframes as an example. For example, the locations on R-subframes on the time-frequency resource and occupied by the first physical downlink control channel are shown in FIG. The UE may obtain location information of R subframes or location information of the starting subframe of R subframes using the configuration information delivered by the base station so that the UE is on time- Lt; RTI ID = 0.0 > R < / RTI > subframes occupied to transmit the downlink control channel. Of course, the UE may determine the position information of the R subframes occupied to transmit the first physical downlink control channel or the position information of the starting subframe of the R subframes according to the related protocol.

For example, if a radio frame satisfying the condition that R = 100 and SFN (i.e., system frame number) mod 100 = 0 is used as the start radio frame and the first downlink subframe in the start radio frame is R Frame is assumed to be used as the starting sub-frame of the frames. Alternatively, to avoid interference between different cells, a cell identity (i. E., Cell ID) may be set as a preset parameter to determine the starting radio frame of R subframes and / or the starting subframe of R subframes Can be used. For example, if a radio frame satisfying the condition (SFN mod 100) + (cell ID mod 100) = 0 is used as the starting radio frame and the first downlink subframe in the starting radio frame is the start of R subframes And is used as a sub-frame. Alternatively, to avoid interference between cells, the configuration information transmitted by the base station includes the starting radio frames in the cells and / or the offset between the starting subframes. In this case, the UE determines the starting radio frame of R subframes and / or the starting subframe of R subframes according to preset conditions such as (SFN mod 100) + offset = 0. In this manner, for UEs in different cells, R subframes at different locations may be occupied to transmit the first physical downlink control channel.

According to the physical downlink control channel transmission method provided in this embodiment of the present invention, it can be seen that a first physical downlink control channel can be transmitted in R subframes. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE. That is, the performance of performing channel estimation on the first physical downlink control channel by the UE is improved using the short-term correlation of the communication environment in the time of the R subframes, and the long- A diversity gain is obtained to improve the performance of monitoring the first physical downlink control channel by the UE.

In addition, on the same frequency domain resource, a number of candidate positions may be set for R subframes. In this case, the UE may further acquire position information of R subframes or position information of the starting subframe of R subframes at any candidate position in a plurality of candidate positions. There is a first offset between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one.

For example, as shown in FIG. 5, three candidate locations are set on the same first frequency domain resource. These three candidate positions each include R subframes. The method for determining the starting radio frame of R subframes at the first candidate position is identical to the method for determining the starting radio frame in FIG. The second candidate position is obtained after the first offset is added to the first candidate position. As shown in Fig. 5, the value of R is used as the first offset, and the third candidate position is obtained after the first offset is successively added to the second candidate position.

In this case, if the first physical downlink control channel transmitted by the base station to UE1 occupies R subframes at the first candidate location, then the first physical downlink control channel transmitted by the base station to UE2 is the second physical location Lt; RTI ID = 0.0 > R < / RTI > In this case, the UE 2 receives the first physical downlink control channel without waiting for the first UE to receive the first physical downlink control channel and transmit the response to the base station.

Of course, the first offset can be specified in the standard. Alternatively, along with information about the R subframes, a first offset may be sent to the UE using configuration information sent by the base station to the UE.

Also, in the information about the R subframes occupied by the first physical downlink control channel, the value of R may be determined according to the format of the DCI carried on the first physical downlink control channel. That is, when the formats of the DCIs carried on the first physical downlink control channel are different, the resources of the R subframes occupied to transmit the first physical downlink control channel are different.

6, on the same first frequency domain resource, if the first physical downlink control channel carries the DCI of format Y, then the value of R1 in the R1 subframes used by the UE is smaller Or; Or if the first physical downlink control channel carries a DCI of format X, then the value of R2 in the R2 subframes used by the UE is greater. The information carried in the DCI format X is different from the information carried in the DCI format Y, but the quantity of bits contained in the DCI format X is the same as the quantity of bits contained in the DCI format Y. Alternatively, the quantity of bits contained in DCI of format X is different from the quantity of bits contained in DCI of format Y, and the quantity of bits contained in DCI of format X is a quantity of bits contained in DCI of format Y Lt; / RTI >

In particular, when the DCI carried on the first physical downlink control channel includes the scheduling information used to perform the scheduling so that the paging message is transmitted on the PDSCH channel, the UE transmits the R sub- It is necessary to monitor the first physical downlink control channel according to the information about the frames.

When the DCI carried on the first physical downlink control channel includes scheduling information used to perform scheduling so that the RAR is transmitted on the PDSCH channel, or when the DCI directly includes some or all of the information on the RAR, The UE needs to monitor the first physical downlink control channel according to the information on the R subframes shown in FIG. 4, FIG. 5, or FIG.

When the DCI carried on the first physical downlink control channel includes scheduling information used to perform scheduling so that the RAR is transmitted on the PDSCH channel, or when the DCI directly includes some or all of the information on the RAR, The sizes of the DCI may be the same in the two cases, i.e., the DCI carried on the first physical downlink control channel has two formats, but the number of bits contained in the DCI of the two formats is the same. For example, the DCI of format X includes scheduling information used to perform scheduling so that the RAR is transmitted on the PDSCH channel, and the DCI of format Y directly includes some or all of the information on the RAR. In this case, the UE first determines the format of the DCI carried on the first physical downlink control channel. If the DCI is format X, the UE decodes the PDSCH channel according to the scheduling information included in the DCI. If the DCI is format Y, then the UE obtains some or all of the information about the RAR directly from the DCI.

The method for determining, by the UE, the format of the DCI carried on the first physical downlink control channel is described in detail in the following embodiments. Details are not described herein.

Also, after obtaining information about the R subframes occupied to transmit the first physical downlink control channel, the UE determines whether the P physical subframes associated with the P subframes occupied to transmit the first physical downlink control channel Further information can be obtained. The position of the start subframe of the P subframes is the same as the position of the start subframe of the R subframes, i.e., the time domain position and the frequency domain position of the start subframe of the P subframes correspond to the start of R subframes The same as those of the subframe. Also, the DCI transmitted on the first physical downlink control channel in the P subframes is the same as the DCI transmitted in the R subframes, P is an integer equal to or greater than 1, and P is not equal to R.

That is, the UE can obtain information on R subframes and information on P subframes. R subframes and P subframes are all used to transmit the first physical downlink control channel. 7, R = T, P = 2T, T is an integer greater than 0, and R and P are integers, as shown in FIG. 7, based on the location of the R subframes on the time- Assuming that the first and second coverage enhancement levels correspond to the first and second coverage enhancement levels, the starting subframe of R subframes is the same as the starting subframe of P subframes, and the P subframes correspond to the time of R subframes - Includes frequency resources. In this manner, for UEs located in different coverage enhancement levels, different numbers of subframes may be set to transmit the first physical downlink control channel.

In addition, if the base station transmits a first physical downlink control channel using P subframes, then the UE actually transmits a first physical downlink control channel, which is transmitted using R subframes corresponding to the first coverage enhancement level, The UE can successfully decode the first physical downlink control channel. Thus, the UE needs to receive a first physical downlink control channel that is transmitted using R subframes rather than P subframes.

It should be noted that the schematic of the locations of the R subframes on the time-frequency resource shown in FIG. 5 or 6 may also include the locations of the P subframes on the time-frequency resource. Details are not described in this embodiment of the invention.

In step 302, the UE obtains the number of ECCEs constituting the first physical downlink control channel in each of the R subframes.

Specifically, the UE may obtain a transmission set for transmitting a first physical downlink control channel. The transmission set may be one or more of the following parameters: the number of PRBs occupied to transmit the first physical downlink control channel, the format of the DCI, the type of CP (Cyclic Prefix, cyclic prefix), or the frame structure type . The frame structure type includes a first frame structure type or a second frame structure type. The first frame structure type is applied to a Frequency Division Duplexing (FDD) system. The second frame structure type is applied to a TDD (Time Division Duplexing) system. Next, the UE determines the number of ECCEs constituting the first physical downlink control channel, according to the transmission set.

For example, the UE may determine the number of ECCEs constituting the first physical downlink control channel in the first subframe among the R subframes (the first subframe is one of the R subframes) You can then decide. Next, the UE determines the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes in the R subframes as the first physical downlink control channel in the first subframe According to the number of constituent ECCEs and the first predetermined rule.

Specifically, the first predetermined rule may be: The number of ECCEs constituting the first physical downlink control channel in each of the R-1 other subframes in the R subframes is equal to the number of ECCEs in the first subframe, Or the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes in the R subframes and the number of ECCEs constituting the first physical downlink control channel in the There is a functional relationship between the number of ECCEs constituting the first physical downlink control channel in the first subframe. Technicians in the relevant field can perform the setup according to actual experience.

For example, the first sub-frame may be set as the starting sub-frame of R sub-frames. For the number of ECCEs constituting the first physical downlink control channel in each subframe from the second subframe to the Rth subframe among the R subframes, a first physical downlink control channel is configured in the starting subframe Refer to the quantity of ECCEs. For example, the number of ECCEs constituting the first physical downlink control channel in each subframe from the second subframe to the Rth subframe is the number of ECCEs constituting the first physical downlink control channel in the start subframe .

Of course, the UE can determine the number of ECCEs constituting the first physical downlink control channel in each of the R subframes according to the configuration information transmitted by the base station. For example, the configuration information includes the number of ECCEs constituting the first physical downlink control channel in the first subframe. Next, the UE determines the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes in the R subframes as the first physical downlink control channel in the first subframe According to the number of constituent ECCEs and the first predetermined rule.

For example, if the number of ECCEs constituting the first physical downlink control channel in the first subframe is 16 or 24, and R-1 other subframes include the first type special subframe, The number of ECCEs constituting the first physical downlink control channel in the subframe is 12 or less than 12.

The first type special subframe is a special subframe corresponding to the configuration of the special subframe (the configuration of the special subframe) in the second frame structure type is 1, 2, 6, 7, or 9. Specifically, each configuration of the special subframe includes three portions: a downlink pilot time slot DwPTS (downlink pilot time slot), a guard period GP, and an uplink pilot time slot UpPTS slot, and the total length of the three parts is 1 ms. For example, when the configuration of the special subframe is 1 and the normal CP is configured on the downlink, the DwPTS of the special subframe includes 19760 OFDM symbols; Or if the extended CP is configured on the downlink, the DwPTS of the special subframe contains 20480 OFDM symbols.

If the first subframe is a first type special subframe, the number of ECCEs constituting the first physical downlink control channel in the first subframe is 12, R-1 other subframes include normal subframes, The number of ECCEs constituting the first physical downlink control channel in the normal subframe is 12, 24, or 16. If R-1 other subframes additionally include a first type special subframe, the quantity of ECCEs constituting the first physical downlink control channel in the first type special subframe is still determined according to a first predetermined rule .

In step 303, the UE determines the indices of occupied ECCEs to configure the first physical downlink control channel according to the number of ECCEs constituting the first physical downlink control channel in each of the R subframes.

For example, the UE may determine the indices of the ECCEs in the first subframe based on the number of candidate positions for transmitting the first physical downlink control channel in the first subframe, the number of ECCEs included in the first subframe, Which is the ECCEs constituting the first physical downlink control channel in one subframe and is determined according to the quantity determined in step 302. [ Next, the UE determines the indexes of the ECCEs of each of R-1 other subframes in the R subframes according to the second predetermined rule and the indexes of the ECCEs in the first subframe.

Of course, the UE can determine the indices of the ECCEs constituting the first physical downlink control channel in each of the R sub-frames according to the configuration information transmitted by the base station. For example, such configuration information includes indices of ECCEs constituting a first physical downlink control channel in a first subframe. Next, the UE calculates indexes of ECCEs in each of R-1 other subframes in R subframes, indexes of ECCEs occupied to construct a first physical downlink control channel in the first subframe, According to a second predetermined rule.

Similar to step 302, the second predetermined rule may be as follows: The indexes of the ECCEs constituting the first physical downlink control channel in each of the R-1 other subframes in the R subframes are denoted by 1 < / RTI > subframes and the indexes of the ECCEs constituting the first physical downlink control channel in each of the R-1 other subframes and the indexes of the first physical downlink control channel in the There is a functional relationship between the indices of the ECCEs constituting the first physical downlink control channel in the subframe. Technicians in the relevant field can perform the setup according to actual experience.

For example, the UE may first determine indices of ECCEs in the starting subframe of R subframes. Next, with respect to the indices of the ECCEs corresponding to the first physical downlink control channel in each subframe from the second subframe to the Rth subframe, the indexes of the ECCEs in the starting subframe are referred to. For example, the indices of the ECCEs corresponding to the first physical downlink control channel in each subframe from the second subframe to the Rth subframe are the same as the indices of the ECCEs in the starting subframe.

In particular, for the second frame structure type, if the starting subframe is a first type special subframe and the number of ECCEs constituting the first physical downlink control channel is 12 ECCEs, then 24 ECCEs in the normal subframe are used , The indices of the ECCEs correspond to all 24 ECCEs. Alternatively, when 12 ECCEs are used in a normal subframe, the normal subframe includes two sets of indexes. One of the index sets is the same as the corresponding ECCE index set in the starting subframe and this index set is used in the normal subframe by default or two index sets are used in the subframe as the first physical downlink control channel And two candidate positions for transmission, respectively.

In step 304, the UE obtains a first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on a first physical downlink control channel.

When a first physical downlink control channel is mapped to PRBs contained in two EPDCCH configuration sets (EPDCCH-setconfig), the UE is in two EPDCCH configuration sets and determines a scrambling code sequence And determines the first parameter according to the parameters used respectively.

For example, the EPDCCH configuration set may include at least one of the following parameters: the ID of the EPDCCH configuration set, the transmission type of the first physical downlink control channel, the first physical down The number of PRB pairs occupied by the link control channel, the locations of these occupied PRB pairs on the frequency domain resource, or the initialization parameters of the scrambling code sequence of the demodulation reference signal (DMRS).

Specifically, if the configuration information transmitted by the base station comprises two EPDCCH configuration sets and the first physical downlink control channel occupies the PRBs in the two EPDCCH configuration sets, then the first physical downlink control channel The transmitted bits are scrambled using a scrambling code sequence. The initial value of the scrambling code sequence generator may be generated by default in accordance with a third predetermined rule using the first parameter in any one of the two EPDCCH configuration sets. The third predetermined rule may be specifically: a parameter used to determine a scrambling code sequence for scrambling a block of bits in a first EPDCCH configuration set and transmitted on a first physical downlink control channel is used , Or a parameter used to determine a scrambling code sequence for scrambling a block of bits in an EPDCCH configuration set that includes larger or smaller quantities of PRBs and transmitted on a first physical downlink control channel is used.

In two EPDCCH configuration sets, one EPDCCH configuration set may include two PRBs, and another EPDCCH configuration set may contain four PRBs. Alternatively, two EPDCCH configuration sets each include two PRBs. The two EPDCCH configuration sets include the same indication information indicating the transmission schemes of the first physical downlink control channel, i.e., whether both transmission schemes are localized transmission or distributed transmission.

Additionally, if the DCI carried on the first physical downlink control channel is used to associate with a cell specific message, the initial value of the scrambling code sequence is generated according to the following formula using the first parameter:

는 스크램블링 코드 시퀀스의 초기 값이고,

는 제1 물리적 다운링크 제어 채널을 전송하기 위한 시작 서브프레임에 대응하는 타임슬롯 번호이다.A is the first parameter explicitly indicated in the protocol,

Is the initial value of the scrambling code sequence,

Is the timeslot number corresponding to the starting subframe for transmitting the first physical downlink control channel.

Further, when the DCI includes scheduling information used to perform scheduling so that a paging message is transmitted on the PDSCH, or when the DCI includes a scheduling message used for scheduling a RAR transmitted on the PDSCH, When the DCI directly includes some or all of the information, the values of the first parameter may be different.

For example, when the DCI includes scheduling information used to perform scheduling such that a paging message is transmitted on the PDSCH, the first parameter may be a specific wireless network temporary identifier for scrambling the CRC included in the DCI. When the DCI includes the scheduling information used to perform scheduling so that the RAR is transmitted on the PDSCH, or when the DCI directly includes some or all of the information on the RAR, the first parameter scrambles the CRC included in the DCI Lt; RTI ID = 0.0 > wireless < / RTI >

In step 305, the UE obtains a second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel.

Similar to determining the first parameter in step 304, when the first physical downlink control channel is mapped to PRBs contained in two EPDCCH configuration sets, the UE sends two EPDCCH configuration sets And determines the second parameter in accordance with the fourth predetermined rule and parameters used respectively in determining the demodulation reference signal.

Similarly, the fourth predetermined rule may specifically be: a parameter used in determining the demodulation reference signal in the first EPDCCH configuration set and associated with the first physical downlink control channel is used, or a greater or less than A parameter used in determining the demodulation reference signal in the EPDCCH configuration set that includes a small number of PRBs and associated with the first physical downlink control channel is used.

For example, for any antenna port number in {107, 108, 109, 110}, a demodulation reference signal sequence is generated according to a pseudo-random sequence,

이다.

to be.

생성기는 초기화될 필요가 있고, 초기화 값은 제2 파라미터를 사용하여 제4 미리 설정된 규칙에 따라 생성된다. 예를 들어, 운반된 DCI가 공통 메시지와 연관시키는데 사용되면, 의사 랜덤 시퀀스의 초기 값은

이고, B는 상위 레이어에 의해 구성되거나 또는 프로토콜에서 미리 설정되는 제2 파라미터이고,

는 타임슬롯 번호이거나 또는 제1 물리적 다운링크 제어 채널을 전송하기 위한 시작 서브프레임에 대응하는 타임슬롯 번호이고,

는 프로토콜에서 미리 설정되는 파라미터이다.Pseudo-random sequence

The generator needs to be initialized and the initialization value is generated according to the fourth preset rule using the second parameter. For example, if the transported DCI is used to associate with a common message, the initial value of the pseudorandom sequence is

B is a second parameter which is constituted by an upper layer or preset in a protocol,

Is a timeslot number or a timeslot number corresponding to a starting subframe for transmitting a first physical downlink control channel,

Is a parameter preset in the protocol.

Also, when the DCI includes scheduling information used to perform scheduling so that a paging message is transmitted on the PDSCH, or when the DCI includes scheduling information used to perform scheduling such that the RAR is transmitted on the PDSCH, The values of the second parameter may be different when the DCI directly includes some or all of the information on the second parameter.

In step 306, the UE obtains the antenna port number associated with the first physical downlink control channel in each of the R subframes.

Specifically, if the DCI carried on the first physical downlink control channel is used to schedule the cell specific message and the normal recurring prefix is configured in the LTE system, the associated antenna port number is {107, 108, 109, 110} Lt; / RTI >

If the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and an extended cyclic prefix is configured in the LTE system, the associated antenna port number is the number at {107, 108}.

If the DCI carried on the first physical downlink control channel is used to schedule UE specific messages, the configuration in the LTE system may be specifically classified as a normal loop prefix and an extended cyclic prefix.

When the normal loop prefix is configured in the LTE system, when the R subframes include a normal subframe and a first type special subframe, the UE determines that the associated antenna port number is the number at {107, 109}.

When a normal loop type prefix is configured in an LTE system, when R subframes do not include a first type special subframe (i.e., all R subframes are normal subframes, or R subframes are normal subframes) Frame and a second type special subframe), the UE determines that the associated antenna port is the number at {107, 108, 109, 110}. The second type special subframe is a special subframe corresponding to when the configuration of the special subframe in the second frame structure type is 3, 4, or 8.

When an extended cyclic prefix is configured in an LTE system, the UE determines that the associated antenna port is a number at {107, 109}.

In addition, if the DCI carried on the first physical downlink control channel is used to schedule UE specific messages, and the R subframes include a normal subframe and a first type special subframe, then the normalized cyclic prefix , The UE determines the lowest ECCE index used in the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, and the ECCE carried in the PRB pair in the first type special subframe, Determines the associated antenna port number at {107, 109} according to the number of antennas.

Correspondingly, if the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the R subframes do not include the first type special subframe, a normal cyclic prefix is configured in the LTE system , The UE determines the number of ECCEs included in the PRB pair in the normal subframe according to the minimum ECCE index used in the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, 107, 108, 109, 110}.

At this time, using steps 301 to 306, the UE receives information about the R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: A first parameter used to determine a number of ECCEs constituting a first physical downlink control channel, indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, 1 physical downlink control channel, and the associated antenna port number.

It should be noted that one or more of the parameters obtained in steps 301 to 306 may be carried in the configuration information sent to the UE by the base station, or may be obtained by the UE according to a pre-stored rule or protocol. This is not limitative of the present invention. Further, the sequence performing steps 301 to 306 is not limited to such an embodiment of the present invention.

In addition, in step 307, the UE determines N candidate positions for transmitting the first physical downlink control channel by the base station, according to the parameters obtained in steps 301 to 306. Each of the N candidate positions includes R subframes.

In addition, at step 308, the base station transmits a first physical downlink control channel until the UE correctly receives, at step 308, the first physical downlink control channel transmitted by the base station in the R subframes, Lt; / RTI > the link control channel, or at each candidate location determined in step 307, the UE monitors. The N candidate positions include a first candidate position.

In addition, after the UE receives the first physical downlink control channel transmitted by the base station at the first candidate location, the UE determines the specific format of the DCI carried on the first physical downlink control channel transmitted by the base station The UE can further determine. The format of the DCI in this specification includes at least two types: a first DCI format and a second DCI format. The first DCI format includes scheduling information used for scheduling the PDSCH. The second DCI format includes some or all of the information about the RAR.

Specifically, the UE may determine the format of the DCI according to information on the first bit in the DCI carried on the first physical downlink control channel.

Alternatively, the UE may determine the format of the DCI according to a scrambling code for scrambling the CRC. The CRC is a CRC (with CRC) appended to the DCI carried on the first physical downlink control channel. For example, after scrambling the CRC (i.e., encrypting the CRC by multiplying the pseudo-random code sequence with a spreading code, different scrambling schemes may be used for DCIs of different formats), the base station may send a scrambling code for the CRC And then attaches the scrambling code for the CRC to the bit following the DCI. In this manner, after receiving the first physical downlink control channel, the UE may determine the format of the DCI according to the scrambling code for the CRC at the bits following the DCI carried on the first physical downlink control channel .

Alternatively, the number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the number of ECCEs constituting the first physical downlink control channel The UE may determine the format of the DCI according to at least one of the indices.

At this time, according to the downlink control channel transmission method provided in this embodiment of the present invention, the UE acquires a parameter set for transmitting a first physical downlink control channel, and according to this parameter set, And determines N candidate positions for transmitting the first physical downlink control channel. Each candidate position includes R subframes, and the same DCI is included in R subframes. That is, according to the physical downlink control channel transmission method provided in this embodiment of the present invention, a first physical downlink control channel can be transmitted in R subframes. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE.

Example 3

8 is a schematic block diagram of a downlink control channel transmission apparatus according to an embodiment of the present invention. The downlink control channel transmitting apparatus provided in this embodiment of the present invention can be configured to perform the methods implemented in the embodiments of the present invention shown in Figs. For ease of explanation, only the parts related to this embodiment of the invention are shown. For specific technical details that are not disclosed, reference is made to the embodiments of the invention shown in Figs. 1-7.

Specifically, as shown in FIG. 8, the downlink control channel transmitting apparatus includes:

A first physical downlink control channel configured to obtain a set of parameters for transmitting a first physical downlink control channel, the first physical downlink control channel transmitting the same downlink control information (DCI) in at least R subframes And R is an integer equal to or greater than 1;

A first determination unit (02) configured to determine N candidate positions for transmitting a first physical downlink control channel by a base station, according to this set of parameters, the candidate position comprises R subframes, and N Is an integer of at least 1;

A monitoring unit (03) configured to monitor, at N candidate locations, whether the base station is transmitting a first physical downlink control channel; And

A receiving unit (04) configured to receive a first physical downlink control channel transmitted by a base station at a first candidate location, the N candidate locations including a first candidate location.

This set of parameters includes information indicating R subframes occupied to transmit a first physical downlink control channel, and the following parameters in each of the R subframes: a first physical downlink control channel A first parameter used to determine a number of ECCEs (enhanced control channel elements), indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the link control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

Further, the first acquiring unit 01 is specifically configured to acquire position information of R sub-frames or position information of a starting sub-frame of R sub-frames at each candidate position.

A plurality of candidate positions are set for R subframes on the same frequency domain resource, a first offset exists between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one.

The first determination unit 02 is further configured to determine the format of the DCI carried on the first physical downlink control channel.

The first obtaining unit 01 is specifically configured to obtain position information of R subframes or position information of a starting subframe of R subframes according to the format of the DCI.

Additionally, the first obtaining unit 01 is specifically configured to obtain a transmission set for transmitting a first physical downlink control channel. The transmission set includes at least one of the number of PRBs occupied to transmit the first physical downlink control channel, the format of DCI, the type of cyclic prefix (CP), or the frame structure type. The frame structure type includes a first frame structure type or a second frame structure type.

The first determination unit 02 is specifically configured to determine the quantity of ECCEs constituting the first physical downlink control channel, according to the transmission set.

In addition, the first decision unit 02 specifically determines the quantity of ECCEs constituting the first physical downlink control channel in the first of the R subframes, according to the transmission set, A subframe is one of R subframes; And the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the number of ECCEs constituting the first set of rules and the first predetermined rule.

The first determination unit 02 determines the number of ECCEs constituting the first physical downlink control channel in the first subframe, the number of candidate positions for transmitting the first physical downlink control channel in the first subframe, To determine the indices of the ECCEs in the first subframe among the R subframes according to the number of ECCEs included in the first subframe; And to determine indexes of ECCEs in each of the R-1 other subframes that are not the first one of the R subframes according to the indexes of the ECCEs in the first subframe and the second predetermined rule .

The first decision unit 02 is in the two EPDCCH configuration sets when a first physical downlink control channel is mapped to PRBs contained in two EPDCCH configuration sets and a scrambling code sequence And to determine the first parameter according to the respective parameters used to determine the second parameter.

The first decision unit 02 is in the two EPDCCH configuration sets when a first physical downlink control channel is mapped to PRBs contained in two EPDCCH configuration sets, And to determine the second parameter according to the parameters each used to determine the second parameter.

If the DCI carried on the first physical downlink control channel is used to schedule the cell specific message and the normal recurring prefix is configured in the LTE system, then the first determination unit 02 determines that the associated antenna port number is {107, 108 , 109, 110}; If the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and if an extended cyclic prefix is configured in the LTE system, the associated antenna port number is determined to be a number at {107, 108}; When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the normal cyclic prefix is configured in the LTE system, the R subframes include the normal subframe and the first type special subframe , The associated antenna port number is determined to be the number at {107, 109}; When a DCI carried on a first physical downlink control channel is used to schedule UE specific messages and a normal loop prefix is configured in an LTE system, when R subframes do not include a first type special subframe, To determine that the antenna port is a number at {107, 108, 109, 110}; Or the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and if an extended cyclic prefix is configured in the LTE system the associated antenna port is further determined to be a number at {107, 109} .

The receiving unit 03 is further configured to receive the configuration information transmitted by the base station.

This configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel. Alternatively, the configuration information may include information indicating R subframes occupied to transmit a first physical downlink control channel, and information indicating at least one of the following parameters in at least one of the R subframes: A number of ECCEs constituting the link control channel, indices of ECCEs, a first parameter used to determine a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an associated antenna port number, or a transmission type of a first physical downlink control channel.

The first determining unit determines the format of the DCI according to information about the first bit at the DCI carried on the first physical downlink control channel; Or to determine the format of the DCI according to a scrambling code for scrambling the CRC; the CRC is a CRC attached to the DCI carried on the first physical downlink control channel; Or the number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the index of the ECCEs constituting the first physical downlink control channel And is further configured to determine the format of the DCI according to at least one.

The DCI format includes a first DCI format and a second DCI format, the first DCI format includes scheduling information used for scheduling a physical downlink shared channel (PDSCH), the second DCI format includes a random access response ) Of the present invention.

9 is a schematic block diagram of another downlink control channel transmission apparatus according to an embodiment of the present invention. The downlink control channel transmitting apparatus provided in this embodiment of the present invention can be configured to perform the methods implemented in the embodiments of the present invention shown in Figs. For ease of explanation, only the parts related to this embodiment of the invention are shown. For specific technical details that are not disclosed, reference is made to the embodiments of the invention shown in Figs. 1-7.

Specifically, as shown in Fig. 9, the downlink control channel transmitting apparatus transmits,

A second acquisition unit (11) configured to obtain a set of parameters for transmitting a first physical downlink control channel, wherein the first physical downlink control channel transmits the same downlink control information (DCI) in at least R subframes And R is an integer equal to or greater than 1;

To determine N candidate positions for transmitting a first physical downlink control channel to the UE, according to a set of parameters, the candidate position comprising R subframes, where N is an integer greater than or equal to one; And a second decision unit (12) configured to determine a first candidate position at N candidate positions as a position for transmitting a first physical downlink control channel to the UE; And

And a transmission unit (13) configured to transmit a first physical downlink control channel to the UE at a first candidate location.

This set of parameters includes information indicating R subframes occupied to transmit a first physical downlink control channel, and the following parameters in each of the R subframes: a first physical downlink control channel A first parameter used to determine a number of ECCEs (enhanced control channel elements), indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the link control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

The transmission unit 13 is further configured to transmit configuration information to the UE.

This configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel. Alternatively, the configuration information may include information indicating R subframes occupied to transmit a first physical downlink control channel, and information indicating at least one of the following parameters in at least one of the R subframes: A number of ECCEs constituting the link control channel, indices of ECCEs, a first parameter used to determine a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an antenna port number associated with the first physical downlink control channel, or a transmission type of the first physical downlink control channel.

At this time, according to the downlink control channel transmission apparatus provided in this embodiment of the present invention, the UE acquires a parameter set for transmitting a first physical downlink control channel, and according to this parameter set, 1 < / RTI > physical downlink control channel. Each candidate position includes R subframes, and the same DCI is included in R subframes. That is, according to the physical downlink control channel transmission method provided in this embodiment of the present invention, a first physical downlink control channel can be transmitted in R subframes. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE.

Example 4

10 is a schematic block diagram of another downlink control channel transmission apparatus according to an embodiment of the present invention. The downlink control channel transmitting apparatus provided in this embodiment of the present invention can be configured to perform the methods implemented in the embodiments of the present invention shown in Figs. For ease of explanation, only the parts related to this embodiment of the invention are shown. For specific technical details that are not disclosed, reference is made to the embodiments of the invention shown in Figs. 1-7.

Such a downlink control channel transmission device may specifically be a user equipment (UE), such as a mobile phone, an intelligent terminal, a multimedia device, or a streaming media device.

For example, such a UE includes a first processor 21, a first transceiver 22, and a bus 23. The first processor 21 and the first transceiver 22 are connected using the bus 23 and can perform communication.

Specifically, in a UE provided in this embodiment of the present invention, the first processor 21 obtains a set of parameters for transmitting a first physical downlink control channel such that the first physical downlink control channel has at least R Gt; subframes, < / RTI > where R is an integer greater than or equal to one; Then, according to the set of parameters, the candidate location comprises R subframes, where N is an integer equal to or greater than 1, to determine N candidate locations for transmitting the first physical downlink control channel by the base station. Also, the first processor 21 uses the first transceiver 22 to monitor, at N candidate locations, whether the base station is transmitting the first physical downlink control channel. The first transceiver 22 is further configured to receive a first physical downlink control channel transmitted by the base station at a first candidate location, and the N candidate locations comprise a first candidate location.

This set of parameters includes information indicating R subframes occupied to transmit a first physical downlink control channel, and the following parameters in each of the R subframes: a first physical downlink control channel A first parameter used to determine a number of ECCEs (enhanced control channel elements), indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the link control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

In addition, the information on the R subframes obtained by the first processor 21 may be specifically the position information of the R subframes or the position information of the starting subframe of the R subframes.

In addition, a number of candidate locations are set for R subframes on the same frequency domain resource. In such a case, the first processor 21 may specifically include acquiring information about the R subframes occupied to transmit the first physical downlink control channel. The first processor 21 Can acquire the position information of R subframes or the position information of the starting subframe of R subframes at the respective candidate positions using the first transceiver 22 from the base station. There is a first offset between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one.

Alternatively, the first processor 21 obtains information about the R subframes occupied to transmit the first physical downlink control channel, in particular, when the first processor 21 receives the first physical downlink control channel Determining a format of the DCI carried on the link control channel, and acquiring position information of R sub-frames or position information of a starting sub-frame of R sub-frames according to the format of the DCI Step < / RTI >

The parameter set obtained by the first processor 21 may further comprise information indicating P subframes occupied to transmit the first physical downlink control channel. The location of the starting subframe of the P subframes is the same as the location of the starting subframe of the R subframes, and the DCI transmitted on the first physical downlink control channel in the P subframes is located in the R subframes Is equal to DCI transmitted, P is an integer equal to or greater than 1, and P is not equal to R.

In addition, the first processor 21 obtains the number of ECCEs constituting the first physical downlink control channel in each of the R subframes. Specifically, when the first processor 21 performs the first physical downlink control Acquiring a transmission set for transmitting a channel, the transmission set including a quantity of PRBs occupied for transmitting a first physical downlink control channel, a format of a DCI, a type of a cyclic prefix (CP) Wherein the frame structure type comprises a first frame structure type or a second frame structure type; And the first processor 21 may determine, based on the transmission set, the quantity of ECCEs constituting the first physical downlink control channel.

The first processor 21 determines the number of ECCEs constituting the first physical downlink control channel according to the transmission set. Specifically, the first processor 21 determines, based on the transmission set, Determining a quantity of ECCEs constituting a first physical downlink control channel in a first sub-frame of the plurality of sub-frames, the first sub-frame being one of R sub-frames; And the first processor 21 calculates the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the number of ECCEs constituting the first physical downlink control channel and the first predetermined rule in the first physical downlink control channel.

Alternatively, the first processor 21 may use the first transceiver 22 to decode the ECCEs of the ECCEs constituting the first physical downlink control channel in the first of the R subframes, - the first sub-frame is one of the R sub-frames; The first processor 21 calculates the number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the number of ECCEs constituting the first physical downlink control channel and the first predetermined rule.

For example, the first sub-frame may be set as the starting sub-frame of R sub-frames. For the number of ECCEs constituting the first physical downlink control channel in each subframe from the second subframe to the Rth subframe among the R subframes, a first physical downlink control channel is configured in the starting subframe Refer to the quantity of ECCEs. For example, the number of ECCEs constituting the first physical downlink control channel in each subframe from the second subframe to the Rth subframe is the number of ECCEs constituting the first physical downlink control channel in the start subframe .

In particular, if the number of ECCEs constituting the first physical downlink control channel in the first subframe is 16 or 24, and R-1 other subframes include a first type special subframe, The number of ECCEs constituting the first physical downlink control channel is 12 or less.

Alternatively, if the first sub-frame is a first type special sub-frame, the number of ECCEs constituting the first physical downlink control channel in the first sub-frame is 12, and R-1 other sub- , The number of ECCEs constituting the first physical downlink control channel in the normal subframe is 12, 24, or 16.

The first type special subframe is a special special subframe corresponding to the configuration of the special subframe in the second frame structure type when 1, 2, 6, 7 or 9.

In addition, the first processor 21 obtains the indices of the ECCEs constituting the first physical downlink control channel in each of the R subframes. Specifically, when the first processor 21 receives the indexes of the ECCEs constituting the first physical downlink control channel in each of the R subframes, 1 number of ECCEs constituting the physical downlink control channel, the number of candidate positions for transmitting the first physical downlink control channel in the first subframe, and the number of ECCEs included in the first subframe, Determining indices of ECCEs in a first sub-frame of the frames; And the first processor (21) calculates indexes of ECCEs in the first subframe and ECCEs in each of R-1 other subframes other than the first subframe among the R subframes according to a second predetermined rule And determining the indexes of the data.

Alternatively, the first processor 21 may use the first transceiver 22 to decode the ECCEs of the ECCEs constituting the first physical downlink control channel in the first of the R subframes, Lt; / RTI >indexes; The first processor 21 determines the indexes of the ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, According to the indexes of the ECCEs constituting the first physical downlink control channel and the second predetermined rule.

The second predetermined rule may be as follows: the indices of the ECCEs constituting the first physical downlink control channel in each of the R-1 other subframes in the R subframes are indexed in the first subframe The indexes of ECCEs that are the same as the indices of the ECCEs constituting the physical downlink control channel or that constitute the first physical downlink control channel in each of the R-1 other subframes, There is a functional relationship between the indices of the ECCEs constituting the downlink control channel. Technicians in the relevant field can perform the setup according to actual experience.

For example, the UE may first determine indices of ECCEs in the starting subframe of R subframes. Next, with respect to the indices of the ECCEs corresponding to the first physical downlink control channel in each subframe from the second subframe to the Rth subframe, the indexes of the ECCEs in the starting subframe are referred to. For example, the indices of the ECCEs corresponding to the first physical downlink control channel in each subframe from the second subframe to the Rth subframe are the same as the indices of the ECCEs in the starting subframe.

In addition, when the first processor 21 obtains the first parameter used to determine the scrambling code sequence for scrambling the blocks of bits transmitted on the first physical downlink control channel, the next step is specifically included When the first physical downlink control channel is mapped to physical resource blocks contained in two EPDCCH configuration sets, the parameters used in determining the scrambling code sequence in the two EPDCCH configuration sets, respectively, The first processor 21 determines the first parameter.

In addition, when the first processor 21 obtains the second parameter used to determine the demodulation reference signal associated with the first physical downlink control channel, the following steps may be specifically included: the first physical downlink control When the channel is mapped to PRBs contained in two EPDCCH configuration sets, the first processor 21, in accordance with the parameters used in determining the demodulation reference signal in the two EPDCCH configuration sets, Determines the second parameter.

In addition, when the first processor 21 obtains the antenna port number associated with the first physical downlink control channel in each of the R sub-frames, the following steps may be specifically included:

When the DCI carried on the first physical downlink control channel is used to schedule the cell specific message and the normal circular prefix is configured in the LTE system, the associated antenna port number is the number at {107, 108, 109, 110} The first processor (21) determines;

When the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and an extended cyclic prefix is configured in the LTE system, the associated antenna port number is the number at {107, 108} 21) determines;

When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the normal cyclic prefix is configured in the LTE system, the R subframes include the normal subframe and the first type special subframe , The first processor 21 determines that the associated antenna port number is the number at {107, 109};

When a DCI carried on a first physical downlink control channel is used to schedule UE specific messages and a normal loop prefix is configured in an LTE system, when R subframes do not include a first type special subframe, The antenna port is determined by the first processor 21 as the number at {107, 108, 109, 110}; or

If the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and an extended cyclic prefix is configured in the LTE system, the associated antenna port is the number at {107, 109} ).

In particular, if the DCI carried on the first physical downlink control channel is used to schedule UE specific messages, and the R subframes include a normal subframe and a first type special subframe, a normal cyclic prefix When configured, the lowest ECCE index used in the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, and the number of ECCEs carried in the PRB pair in the first type special subframe The UE then determines the associated antenna port number at {107, 109}.

When the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the R subframes do not include the first type special subframe, when the normal loop type prefix is configured in the LTE system, 1 UE, according to the lowest ECCE index used in the physical downlink control channel, the number of ECCEs occupied by the first physical downlink control channel, and the number of ECCEs carried in the PRB pair in the normal subframe , 109,110}. ≪ / RTI >

In addition, when acquiring the parameter set for transmitting the first physical downlink control channel, the first processor 21 can use the first transceiver 22 to receive the configuration information transmitted by the base station have.

This configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel. Alternatively, the configuration information may include information indicating R subframes occupied to transmit a first physical downlink control channel, and information indicating at least one of the following parameters in at least one of the R subframes: A number of ECCEs constituting the link control channel, indices of ECCEs, a first parameter used to determine a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an associated antenna port number, or a transmission type of a first physical downlink control channel.

In addition, the DCI format includes a first DCI format and a second DCI format, wherein the first DCI format includes scheduling information used to schedule physical downlink shared channel (PDSCH), and the second DCI format includes RAR random access response ").

Specifically, after the first transceiver 22 receives the first physical downlink control channel transmitted by the base station at the first candidate location, the first physical downlink control channel is transmitted to the first physical downlink control channel, The first processor 21 determining the format of the DCI according to information about the bits; Or the first processor 21 determines the format of the DCI according to a scrambling code for scrambling the CRC; the CRC is a CRC attached to the DCI carried on the first physical downlink control channel; Or the number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the index of the ECCEs constituting the first physical downlink control channel The first processor 21 may determine the format of the DCI according to at least one of the steps.

11 is a schematic block diagram of another downlink control channel transmission apparatus according to an embodiment of the present invention. The downlink control channel transmitting apparatus provided in this embodiment of the present invention can be configured to perform the methods implemented in the embodiments of the present invention shown in Figs. For ease of explanation, only the parts related to this embodiment of the invention are shown. For specific technical details that are not disclosed, reference is made to the embodiments of the invention shown in Figs. 1-7.

Such a downlink control channel transmission apparatus may be specifically a base station, such as a macro base station, a micro base station, a remote wireless base station, or a repeater.

For example, such a base station includes a second processor 31, a second transceiver 32, and a bus 33. The second processor 31 and the second transceiver 32 are connected using the bus 33 and can perform communication.

Specifically, in the base station provided in this embodiment of the present invention, the second processor 31 obtains a set of parameters for transmitting a first physical downlink control channel such that the first physical downlink control channel includes at least R Gt; subframes, < / RTI > where R is an integer greater than or equal to one; To determine N candidate positions for transmitting a first physical downlink control channel to the UE, according to a set of parameters, the candidate position comprising R subframes, where N is an integer greater than or equal to one; And determine a first candidate location at the N candidate locations as a location for transmitting the first physical downlink control channel to the UE. The second transceiver 32 is configured to transmit a first physical downlink control channel to the UE in a first candidate location.

This set of parameters includes information indicating R subframes occupied to transmit a first physical downlink control channel, and the following parameters in each of the R subframes: a first physical downlink control channel A first parameter used to determine a number of ECCEs (enhanced control channel elements), indices of ECCEs, a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the link control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel.

In addition, after the second processor 31 acquires the parameter set for transmitting the first physical downlink control channel, the second transceiver 32 may further transmit configuration information to the UE.

This configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel. Alternatively, the configuration information may include information indicating R subframes occupied to transmit a first physical downlink control channel, and information indicating at least one of the following parameters in at least one of the R subframes: A number of ECCEs constituting the link control channel, indices of ECCEs, a first parameter used to determine a scrambling code sequence for scrambling blocks of bits transmitted on a first physical downlink control channel, A second parameter used to determine a demodulation reference signal associated with the control channel, an antenna port number associated with the first physical downlink control channel, or a transmission type of the first physical downlink control channel.

According to the downlink control channel transmission apparatus provided in this embodiment of the present invention, the UE obtains a set of parameters for transmitting a first physical downlink control channel, and in accordance with this set of parameters, And determines N candidate positions for transmitting the link control channel. Each candidate position includes R subframes, and the same DCI is included in R subframes. That is, according to the physical downlink control channel transmission method provided in this embodiment of the present invention, a first physical downlink control channel can be transmitted in R subframes. Thus, in one sub-frame (1 ms), compared to the prior art where the UE needs to monitor a number of candidate EPDCCHs and needs to attempt to decode each candidate EPDCCH in the candidate EPDCCH set according to the configuration information , The UE may receive the first physical downlink control channel in each of the R subframes, thereby enhancing the signal strength of receiving the first physical downlink control channel by the UE.

It will be appreciated by those skilled in the relevant art that for the purposes of convenience and brief description, the division of the functional modules described above is used only as an example for illustration purposes. In practical applications, the functions described above can be assigned to different functional modules and can be implemented according to the requirements, i.e. the internal structure of the device can be divided into different functional modules to implement all or part of the functions described above . For a detailed operating process of the described systems, devices, and units, reference is made to corresponding processes in the method embodiments described above. The details are not again described herein.

It should be understood that in some embodiments provided in this application, the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the device embodiments described are merely examples. For example, a module or unit partition is merely a logical functional partition, and in actual implementation it may be a different partition. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed. Also, interconnects or direct connections or communications connections that are displayed or discussed may be implemented using some of the interfaces. Indirect connections or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

The units described as separate portions may or may not be physically separate and the portions displayed as units may or may not be physical units and may be located in one location or may be located on multiple network units Lt; / RTI > Some or all of the units may be selected according to actual requirements to achieve the objectives of the solutions of the embodiments.

Further, the functional units in the embodiments of the present invention may be integrated into one processing unit, or each of these units may be physically present alone, or two or more units may be integrated into one unit . The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software functional unit.

When an integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, essentially all or some of the technical solutions of the present invention, or portions contributing to the prior art, or technical solutions may be implemented in the form of software products. The computer software product may be stored on a storage medium and provided to a computer device or processor (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the methods described in embodiments of the present invention It contains several commands for commanding. The storage medium described above may store program codes, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, Lt; / RTI >

The foregoing description is only specific embodiments of the invention and is not intended to limit the scope of protection of the invention. Any alteration or substitution that can easily be devised by those skilled in the art within the technical scope disclosed by the present invention will be within the scope of the present invention. Accordingly, the scope of protection of the present invention will be dependent on the scope of protection of the claims.

Claims (36)

A physical downlink control channel transmission method comprising:
The method comprising: obtaining a set of parameters for transmitting a first physical downlink control channel by a user equipment (UE), the first physical downlink control channel having the same downlink control information (DCI) in at least R subframes, R is an integer greater than or equal to 1;
Determining, by the UE according to the parameter set, N candidate positions for transmitting the first physical downlink control channel by a base station, the candidate location including the R subframes, An integer of 1 or more;
Monitoring by the UE at the N candidate locations whether the base station transmits the first physical downlink control channel; And
Receiving, by the UE, a first physical downlink control channel transmitted by the base station at a first candidate location, the N candidate locations including the first candidate location,
. The method according to claim 1,
Wherein the parameter set comprises information indicative of R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: the first physical downlink control channel Used for determining a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs (enhanced control channel elements) A second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel Comprising: 3. The method of claim 2,
Wherein information on the R subframes is position information of the R subframes or position information of a starting subframe of the R subframes. The method of claim 3,
A plurality of candidate positions are set for the R subframes on the same frequency domain resource;
Wherein acquiring, by the UE, information about R subframes occupied to transmit the first physical downlink control channel comprises:
Obtaining position information of the R subframes or position information of a starting subframe of the R subframes by the UE at each candidate position,
Wherein a first offset exists between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one. The method of claim 3,
Wherein acquiring, by the UE, information about R subframes occupied to transmit the first physical downlink control channel comprises:
Determining, by the UE, the format of the DCI carried on the first physical downlink control channel; And
Acquiring, by the UE, position information of the R sub-frames or position information of a starting sub-frame of the R sub-frames according to a format of the DCI
. 6. The method according to any one of claims 2 to 5,
Wherein the parameter set further comprises information indicative of P subframes occupied to transmit the first physical downlink control channel and wherein the position of the starting subframe of the P subframes is determined by the position of the R subframes Wherein the DCI transmitted on the first physical downlink control channel in the P subframes is the same as the DCI transmitted in the R subframes and P is an integer equal to or greater than 1 , P is not equal to R. 7. The method according to any one of claims 2 to 6,
Wherein the step of acquiring, by the UE, the quantity of ECCEs constituting the first physical downlink control channel in each of the R sub-
The method comprising the steps of: acquiring, by the UE, a transmission set for transmitting the first physical downlink control channel, the transmission set comprising physical resource blocks (PRBs) occupied to transmit the first physical downlink control channel, A type of the DCI, a type of a cyclic prefix (CP), or a frame structure type, the frame structure type including a first frame structure type or a second frame structure type; And
Determining, by the UE according to the transmission set, the quantity of ECCEs constituting the first physical downlink control channel
. 8. The method of claim 7,
Wherein the step of determining, by the UE according to the transmission set, the quantity of ECCEs constituting the first physical downlink control channel comprises:
Determining, by the UE according to the transmission set, the quantity of ECCEs constituting the first physical downlink control channel in a first one of the R subframes, wherein the first subframe includes R One of the subframes; And
The number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes that are not the first subframe among the R subframes, Determining by the UE according to a quantity and a first predetermined rule of the number of ECCEs constituting the link control channel
. 7. The method according to any one of claims 2 to 6,
Wherein the step of acquiring, by the UE, the quantity of ECCEs constituting the first physical downlink control channel in each of the R sub-
Receiving, by the UE, a quantity of ECCEs constituting the first physical downlink control channel in a first sub-frame of the R sub-frames and transmitted by the base station, the first sub- One of the R subframes; And
The number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes that are not the first subframe among the R subframes, Determining by the UE according to a quantity and a first predetermined rule of the number of ECCEs constituting the link control channel
. 10. The method according to claim 8 or 9,
If the number of ECCEs constituting the first physical downlink control channel in the first subframe is 16 or 24 and the R-1 other subframes include a first type special subframe, The number of ECCEs constituting the first physical downlink control channel in a subframe is 12 or less than 12; or
Wherein the first subframe is a first type special subframe, the number of ECCEs constituting the first physical downlink control channel in the first subframe is 12, R-1 other subframes are normal subframes The number of ECCEs constituting the first physical downlink control channel in the normal subframe is 12, 24, or 16,
Wherein the first type special subframe is a special subframe corresponding to a special subframe in the second frame structure type when the configuration is 1, 2, 6, 7, or 9. 11. The method according to any one of claims 7 to 10,
Wherein acquiring, by the UE, indices of ECCEs constituting the first physical downlink control channel in each of the R subframes comprises:
The number of ECCEs constituting the first physical downlink control channel in the first subframe, the number of candidate positions for transmitting the first physical downlink control channel in the first subframe, Determining, by the UE, indices of ECCEs in a first one of the R subframes according to a quantity of ECCEs included in the R subframes; And
According to the indexes of the ECCEs in the first subframe and the second predetermined rule, the indexes of ECCEs in each of R-1 other subframes other than the first subframe among the R subframes, , ≪ / RTI >
. 11. The method according to any one of claims 7 to 10,
Wherein acquiring, by the UE, indices of ECCEs constituting the first physical downlink control channel in each of the R subframes comprises:
Receiving, by the UE, indices of ECCEs constituting the first physical downlink control channel in a first one of the R subframes and transmitted by the base station; And
The indexes of the ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, Determining by the UE according to indexes of the ECCEs constituting the downlink control channel and a second predetermined rule,
. 13. The method according to any one of claims 2 to 12,
Wherein acquiring by the UE a first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel comprises:
When the first physical downlink control channel is mapped to physical resource blocks (PRBs) included in two enhanced physical downlink control channel (EPDCCH) configuration sets, the first physical downlink control channel is in the two EPDCCH configuration sets and has a scrambling code sequence And determining, by the UE, the first parameter in accordance with parameters used to determine the first parameter. 13. The method according to any one of claims 2 to 12,
Wherein acquiring by the UE a second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel comprises:
When the first physical downlink control channel is mapped to physical resource blocks included in two EPDCCH configuration sets, parameters used in determining the demodulation reference signal in the two EPDCCH configuration sets And determining, by the UE, the second parameter according to the second parameter. 15. The method according to any one of claims 2 to 14,
Wherein acquiring, by the UE, an antenna port number associated with the first physical downlink control channel in each of the R sub-
If a DCI carried on the first physical downlink control channel is used to schedule cell specific messages and a normal cyclic prefix is configured in a Long Term Evolution (LTE) system, the associated antenna port number is { 107, 108, 109, 110} by the UE;
If the DCI carried on the first physical downlink control channel is used to schedule a cell specific message and an extended cyclic prefix is configured in the LTE system, then the associated antenna port number is {107, 108} , By the UE;
Wherein when the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and the normalized cyclic prefix is configured in the LTE system, the R subframes are classified into a normal subframe and a first type special subframe Determining, by the UE, that the associated antenna port number is a number at {107, 109} when included;
Wherein when the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and a normal loop prefix is configured in the LTE system, the R subframes do not include the first type special subframe Determining, by the UE, that the associated antenna port is a number at {107, 108, 109, 110}; or
If the DCI carried on the first physical downlink control channel is used to schedule a UE specific message and if an extended cyclic prefix is configured in the LTE system then the associated antenna port is a number at {107, 109} , ≪ / RTI >
. 16. The method of claim 15,
Wherein when a DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the R subframes include the normal subframe and the first type special subframe, When the normal loop type prefix is configured, the lowest ECCE index used in the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, and the PRB Determine the associated antenna port number at {107, 109} according to the number of ECCEs carried in the pair; or
If the DCI carried on the first physical downlink control channel is used to schedule the UE specific message and the R subframes do not include the first type special subframe, , The lowest ECCE index used in the first physical downlink control channel, the number of ECCEs occupied by the first physical downlink control channel, and the number of ECCEs carried in the PRB pair in the normal sub- Wherein the UE determines an associated antenna port number at {107, 108, 109, 110} according to the quantity. 17. The method according to any one of claims 2 to 16,
Wherein acquiring, by the UE, a set of parameters for transmitting the first physical downlink control channel comprises:
Receiving, by the UE, configuration information transmitted by the base station,
Wherein the configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or the configuration information comprises information indicating R subframes occupied to transmit the first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs constituting a link control channel, A second parameter used to determine a demodulation reference signal associated with a physical downlink control channel, an associated antenna port number, or a transmission type of the first physical downlink control channel. 18. The method according to any one of claims 2 to 17,
Wherein the format of the DCI includes a first DCI format and a second DCI format, the first DCI format includes scheduling information used for scheduling a physical downlink shared channel (PDSCH), and the second DCI format includes a RAR random access response < / RTI >
After receiving the first physical downlink control channel transmitted by the base station by the UE at a first candidate location,
Determining, by the UE, the format of the DCI according to information about a first bit at a DCI carried on the first physical downlink control channel; or
Determining, by the UE, the format of the DCI according to a scrambling code for scrambling a cyclic redundancy check (CRC), the CRC being a CRC attached to a DCI carried on the first physical downlink control channel -; or
The number of RCEs occupied to transmit the first physical downlink control channel, the number of ECCEs constituting the first physical downlink control channel, or the index of the ECCEs constituting the first physical downlink control channel Determining, by the UE, the format of the DCI according to at least one of
Further comprising: A physical downlink control channel transmission method comprising:
The method comprising the steps of: obtaining, by a base station, a set of parameters for transmitting a first physical downlink control channel, the first physical downlink control channel being used to transmit the same downlink control information (DCI) in at least R subframes , R is an integer of 1 or more;
Determining, by the base station, N candidate positions for transmitting the first physical downlink control channel to a user equipment (UE), the candidate location including the R subframes , N is an integer of 1 or more; And
Determining, by the base station, a first candidate location at the N candidate locations, as a location for transmitting the first physical downlink control channel to the UE; and determining, at the first candidate location, 1 physical downlink control channel to the UE
. 20. The method of claim 19,
Wherein the parameter set comprises information indicative of R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: the first physical downlink control channel Used for determining a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs (enhanced control channel elements) A second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel Comprising: 21. The method according to claim 19 or 20,
After obtaining the set of parameters for transmitting the first physical downlink control channel by the base station,
Further comprising, by the base station, transmitting configuration information to the UE,
Wherein the configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or the configuration information comprises information indicating R subframes occupied to transmit the first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs constituting a link control channel, At least one of a second parameter used to determine a demodulation reference signal associated with a physical downlink control channel, an antenna port number associated with the first physical downlink control channel, or a transmission type of the first physical downlink control channel . A physical downlink control channel transmitter comprising:
A first acquisition unit configured to obtain a set of parameters for transmitting a first physical downlink control channel, wherein the first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes , R is an integer of 1 or more;
A first determination unit configured to determine N candidate positions for transmitting the first physical downlink control channel by a base station, according to the parameter set, the candidate position comprising the R subframes, and N Is an integer of at least 1;
A monitoring unit configured to monitor at the N candidate locations whether the base station transmits the first physical downlink control channel; And
A receiving unit configured to receive the first physical downlink control channel transmitted by the base station at a first candidate location, the N candidate locations including the first candidate location,
/ RTI >
Wherein the parameter set comprises information indicating R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: the first physical downlink control channel Used for determining a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs (enhanced control channel elements) A second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel Comprising a device. 23. The method of claim 22,
Wherein the first obtaining unit is configured to obtain position information of the R sub-frames or position information of a starting sub-frame of the R sub-frames at each candidate position,
A plurality of candidate positions are set for the R subframes on the same frequency domain resource, a first offset exists between the Mth candidate position and the (M-1) th candidate position, and M is an integer greater than one, . 23. The method of claim 22,
Wherein the first determination unit is further configured to determine a format of a DCI carried on the first physical downlink control channel;
Wherein the first obtaining unit is configured to obtain position information of the R sub-frames or position information of a starting sub-frame of the R sub-frames according to a format of the DCI. 25. The method according to any one of claims 22 to 24,
Wherein the first acquisition unit is specifically configured to obtain a transmission set for transmitting the first physical downlink control channel, the transmission set comprising PRBs occupied for transmitting the first physical downlink control channel resource blocks, a DCI format, a cyclic prefix (CP) type, or a frame structure type, wherein the frame structure type includes a first frame structure type or a second frame structure type, ;
Wherein the first determination unit is further configured to determine, based on the transmission set, the quantity of ECCEs constituting the first physical downlink control channel. 26. The method of claim 25,
The first decision unit specifically determines a quantity of ECCEs constituting the first physical downlink control channel in a first one of the R subframes according to the transmission set, The frame is one of the R subframes; And a number of ECCEs constituting the first physical downlink control channel in each of R-1 other subframes other than the first subframe among the R subframes, The number of ECCEs constituting the downlink control channel, and a first predetermined rule. 27. The method according to any one of claims 22 to 26,
Wherein the first determination unit determines a number of ECCEs constituting the first physical downlink control channel in the first subframe, a quantity of ECCEs constituting the first physical downlink control channel in the first subframe, And determining indexes of ECCEs in a first subframe among the R subframes according to the number of ECCEs included in the first subframe; In accordance with the indexes of the ECCEs in the first subframe and the second predetermined rule, indexes of ECCEs in each of R-1 other subframes other than the first subframe among the R subframes are determined Further comprising: 28. The method according to any one of claims 22 to 27,
Wherein the first decision unit is in the two EPDCCH configuration sets when the first physical downlink control channel is mapped to PRBs included in two EPDCCH configuration sets and the scrambling code sequence is And determine the first parameter in accordance with parameters used to determine the first parameter. 28. The method according to any one of claims 22 to 27,
Wherein the first decision unit is in the two EPDCCH configuration sets when the first physical downlink control channel is mapped to physical resource blocks contained in two EPDCCH configuration sets, And determine the second parameter in accordance with parameters used to determine the second parameter. 30. The method according to any one of claims 22 to 29,
The first determination unit determines whether a DCI carried on the first physical downlink control channel is used to schedule a cell specific message and if a normal loop prefix is configured in a Long Term Evolution (LTE) system, Is a number at {107, 108, 109, 110}; If the DCI carried on the first physical downlink control channel is used to schedule cell specific messages and if an extended cyclic prefix is configured in the LTE system then the associated antenna port number is determined to be a number at {107, 108} ; Wherein when the DCI carried on the first physical downlink control channel is used to schedule a user equipment (UE) specific message and the normalized cyclic prefix is configured in the LTE system, the R subframes are classified into a normal subframe and a first type When including a special subframe, the associated antenna port number is determined to be a number at {107, 109}; When a DCI carried on the first physical downlink control channel is used to schedule a UE specific message and a normal loop prefix is configured in an LTE system, when the R subframes do not include a first type special subframe , The associated antenna port to be a number at {107, 108, 109, 110}; Or the DCI carried on the first physical downlink control channel is used to schedule UE specific messages and if an extended cyclic prefix is configured in the LTE system then the associated antenna port is determined to be a number at {107, 109} Further comprising: 31. The method according to any one of claims 22 to 30,
Wherein the receiving unit is further configured to receive configuration information transmitted by the base station,
Wherein the configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or the configuration information comprises information indicating R subframes occupied to transmit the first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs constituting a link control channel, A second parameter used to determine a demodulation reference signal associated with a physical downlink control channel, an associated antenna port number, or a transmission type of the first physical downlink control channel. 32. The method according to any one of claims 22 to 31,
The first determining unit determines a format of the DCI according to information about a first bit at a DCI carried on the first physical downlink control channel; Or a scrambling code for scrambling a cyclic redundancy check (CRC), the CRC being a CRC attached to the DCI carried on the first physical downlink control channel; Or the number of ECCEs constituting the first physical downlink control channel or the number of ECCEs constituting the first physical downlink control channel, And to determine the format of the DCI according to at least one of the indices,
Wherein the format of the DCI includes a first DCI format and a second DCI format, the first DCI format includes scheduling information used for scheduling a physical downlink shared channel (PDSCH), and the second DCI format includes a RAR random access response ").< / RTI > A physical downlink control channel transmitter comprising:
A second obtaining unit configured to obtain a set of parameters for transmitting a first physical downlink control channel, the first physical downlink control channel being used to transmit the same downlink control information (DCI) in at least R subframes , R is an integer of 1 or more;
Determining, based on the parameter set, N candidate positions for transmitting the first physical downlink control channel to a user equipment (UE), the candidate location including the R subframes, wherein N is one or more Integer -; And a second decision unit configured to determine a first candidate position at the N candidate positions as a position for transmitting the first physical downlink control channel to the UE; And
And to transmit the first physical downlink control channel to the UE at the first candidate location,
/ RTI >
Wherein the parameter set comprises information indicating R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: the first physical downlink control channel Used for determining a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs (enhanced control channel elements) A second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel Comprising a device. 34. The method of claim 33,
Wherein the transmitting unit is further configured to transmit configuration information to the UE,
Wherein the configuration information includes information indicating R subframes occupied to transmit the first physical downlink control channel; Or the configuration information comprises information indicating R subframes occupied to transmit the first physical downlink control channel and information indicating at least one of the following parameters in at least one of the R subframes: A first parameter used to determine a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs constituting a link control channel, At least one of a second parameter used to determine a demodulation reference signal associated with a physical downlink control channel, an antenna port number associated with the first physical downlink control channel, or a transmission type of the first physical downlink control channel . A physical downlink control channel transmitting apparatus comprising a first processor and a first transceiver coupled to the first processor,
The first processor is configured to obtain a set of parameters for transmitting a first physical downlink control channel, wherein the first physical downlink control channel is used to transmit the same downlink control information (DCI) in at least R subframes , R is an integer of 1 or more; Determining, based on the parameter set, N candidate positions for transmitting the first physical downlink control channel by a base station, the candidate location including the R subframes, where N is an integer greater than or equal to one; And to monitor at the N candidate locations using the first transceiver whether the base station transmits the first physical downlink control channel;
Wherein the first transceiver is further configured to receive, at a first candidate location, a first physical downlink control channel transmitted by the base station, the N candidate locations including the first candidate location,
Wherein the parameter set comprises information indicating R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: the first physical downlink control channel Used for determining a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs (enhanced control channel elements) A second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel Comprising a device. A physical downlink control channel transmitting apparatus comprising a second processor and a second transceiver connected to the second processor,
The second processor acquires a set of parameters for transmitting a first physical downlink control channel, the first physical downlink control channel being used to transmit the same downlink control information (DCI) in at least R subframes , R is an integer of 1 or more; To determine N candidate positions for transmitting a first physical downlink control channel to a user equipment (UE), according to the set of parameters, the candidate position comprising the R subframes, wherein N is an integer greater than or equal to one -; And determine a first candidate location at the N candidate locations as a location for transmitting the first physical downlink control channel to the UE;
Wherein the second transceiver is configured to transmit the first physical downlink control channel to the UE at the first candidate location,
Wherein the parameter set comprises information indicating R subframes occupied to transmit the first physical downlink control channel, and the following parameters in each of the R subframes: the first physical downlink control channel Used for determining a scrambling code sequence for scrambling a block of bits transmitted on the first physical downlink control channel, a first parameter used to determine a number of ECCEs (enhanced control channel elements) A second parameter used to determine a demodulation reference signal associated with the first physical downlink control channel, an antenna port number associated with the first physical downlink control channel, and a transmission type of the first physical downlink control channel Comprising a device.

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